The Ultimate Guide to the Push/Pull/Legs (PPL) and Core Workout Program

strength training app, 12reps app

By Will Duru, BSc (Hons) Sport and Exercise Science, Founder of the 12reps App

I want to tell you a story I’ve seen a thousand times. A woman in her 40s or 50s walks into my gym. She’s motivated, she’s ready to make a change, but she’s completely overwhelmed. She looks at all the equipment and has no idea where to start. So, she does what most people do: a little bit of this, a little bit of that. Some bicep curls, a bit of treadmill, maybe a few crunches. She leaves feeling like she’s done something, but after a few weeks, she’s frustrated because nothing is changing.

This used to be one of the biggest challenges I faced as a personal trainer. How could I give my clients a plan that was simple enough to follow, but effective enough to get them real results? The answer, it turned out, was surprisingly simple. It’s a system that has been around for decades, but it’s often over-complicated and made to sound intimidating. It’s called the Push/Pull/Legs (PPL) split.

I started building all of my clients’ programs around this simple idea, and the results were incredible. They were getting stronger, they were building muscle, and most importantly, they were finally feeling confident and in control of their workouts. This is the exact system that I used as the foundation for my fitness app, 12reps. And the results have been mind-blowing. We’ve had over 2,000 downloads, and we’re approaching 1,000 paying subscribers. We’re generating real revenue, all because we’re giving people a simple, effective plan that works. In this article, I’m going to break down the PPL split for you, just like I do for my clients, and show you how you can use it to finally get the results you deserve.

strength training app

What is Push/Pull/Legs? (The Simple Explanation)

I know that “Push/Pull/Legs” can sound like some kind of complicated bodybuilding jargon. But I promise you, it’s the simplest and most logical way to organise your workouts. Let’s break it down.

Imagine your body has three basic movement patterns:

Pushing: Think about any movement where you are pushing something away from your body. Pushing a door open, putting something on a high shelf, or getting up off the floor. The muscles you use for this are your chest, shoulders, and triceps.

Pulling: Now, think about any movement where you are pulling something towards your body. Opening a car door, starting a lawnmower, or picking up a heavy shopping bag. The muscles you use for this are your back and biceps.

Legs: This one is pretty obvious! It’s everything you do with your lower body. Standing up from a chair, walking up the stairs, or squatting down to pick something up. This uses your quads, hamstrings, glutes, and calves.

That’s it. That’s the entire system. Instead of walking into the gym and just randomly picking exercises, you have a clear focus for each day. On “Push Day,” you only train your pushing muscles. On “Pull Day,” you only train your pulling muscles. And on “Leg Day,” you train your legs. It’s that simple.

12reps- strength training

Why This Works So Well (From My Experience)

For years, I tried different workout splits with my clients. Full body workouts, upper/lower splits, you name it. But nothing has ever worked as consistently as PPL, and I think it comes down to a few simple reasons.

First, it gives your muscles time to recover. This is the big one. When you have a dedicated Push Day, you are working your chest, shoulders, and triceps hard. Then, for the next 48 hours or more, those muscles get to rest and rebuild while you are training your back, biceps, and legs. This is how you get stronger. You don’t build muscle in the gym; you build it when you are resting. PPL has recovery built right into the system.

Second, it allows you to focus. When you walk into the gym and you know it’s Pull Day, you have a clear mission. You’re not trying to do a million different things at once. You can put all of your energy and focus into training your back and biceps. This leads to better quality workouts, and better quality workouts lead to better results. It’s that simple.

Third, it’s incredibly efficient. Because you are working related muscle groups together, you get a lot of bang for your buck. For example, when you are doing a bench press on Push Day, you are not just working your chest; you are also working your shoulders and triceps. This means you can get a great workout in a reasonable amount of time, which is a huge bonus when you are busy.

strangth training, 12reps app strength training

Don't Forget Your Core! (My Secret Weapon)

If you look at a classic PPL program online, you might notice that something is missing: dedicated core work. This is a huge mistake, in my opinion. Your core—your abs, obliques, and lower back—is the foundation of everything you do. It’s what keeps you stable when you lift heavy things, it’s what protects your spine from injury, and it’s what gives you a strong, confident posture. [1]

I tell all of my clients that a strong core is their secret weapon. That’s why in the 12reps app, we make sure to include core training in every single program. You don’t need to spend hours doing crunches. A few simple, effective exercises at the end of each workout is all it takes. I like to add one or two core exercises to the end of each Push, Pull, and Leg day. This way, you are training your core frequently throughout the week, without making your workouts too long.

Strength Training in Your 30s and 40s: Why Personal Training (Tower Bridge/London Bridge)

How I Structure the Week for My Clients

One of the best things about the PPL split is how flexible it is. You can adapt it to fit your schedule, no matter how busy you are. Here are the two most common ways I set it up for my clients.

The 3-Day-a-Week Plan (The “I’m Super Busy” Option)

This is the perfect starting point. It’s simple, it’s manageable, and it gives you plenty of time to recover between workouts. With this plan, you are hitting every muscle group with high intensity once a week. It’s the perfect way to build a solid foundation of strength.

Monday: Push Day + Core

Tuesday: Rest

Wednesday: Pull Day + Core

Thursday: Rest

Friday: Leg Day + Core

Saturday & Sunday: Rest

The 4-Day-a-Week Plan (The “I Want a Bit More” Option)

Once my clients get comfortable with the 3-day split and they want to take things to the next level, we often move to a 4-day plan. This allows us to hit our muscles a little more frequently. That fourth “Full Body Day” is a great way to add a little extra volume and stimulate more muscle growth without spending hours in the gym. We usually pick one or two key exercises from each of the PPL days and do them together.

Monday: Push Day + Core

Tuesday: Pull Day

Wednesday: Rest

Thursday: Leg Day + Core

Friday: Full Body Day

Saturday & Sunday: Rest

A Sample Plan to Get You Started

To show you how simple and powerful this can be, here is a sample 3-day PPL and core workout that I would give to one of my clients. This is the exact kind of plan you’ll find in the 12reps app. Remember, this is just a starting point. The key is to focus on good form and to try and get a little bit stronger each week.

My Go-To Push Day

Exercise

Sets

Reps

Dumbbell Bench Press

5

8-12

Dumbbell Shoulder Press

5

8-12

Push-Ups

5

As many as you can!

Lateral Raises

5

12-15

Tricep Dips (on a bench)

5

10-15

Core: Plank

3

Hold for 30-60 sec

 

My Go-To Pull Day

Exercise

Sets

Reps

Dumbbell Rows

5

8-12 per arm

Lat Pulldowns

5

10-15

Seated Cable Rows

5

10-15

Bicep Curls

5

12-15

Face Pulls

5

15-20

Core: Leg Raises

3

15-20

 

My Go-To Leg Day

Exercise

Sets

Reps

Goblet Squats

5

10-15

Romanian Deadlifts

5

10-15

Lunges

5

10-12 per leg

Glute Bridges

5

15-20

Calf Raises

5

15-20

Core: Russian Twists

3

15-20 per side

 

4-Day Push Pull Legs Program for Muscle Gain and Fat Loss | 12Reps app

References

  1. [1] Mayo Clinic. (2022). Core exercises: Why you should strengthen your core muscles. https://www.mayoclinic.org/healthy-lifestyle/fitness/in-depth/core-exercises/art-20044751

12reps: The Future of Strength Training and Longevity | Founded by Will Duru

strength training app

My name is Will Duru, and for the last ten years, I’ve been a personal trainer. Every single day, I’ve seen people walk into the gym with the best intentions in the world, only to leave feeling frustrated and defeated. They lack a plan, they don’t know how to use the equipment, and they’re not seeing results. That’s why I built 12reps.

12reps is a mobile app that puts a world-class personal trainer in your pocket, for a fraction of the cost. We use AI to create truly personalised strength training programs that are designed by certified trainers, like me, to help you build muscle, get stronger, and improve your long-term health. The fitness app market is crowded with generic, one-size-fits-all solutions. We are different. We make serious, effective strength training simple and accessible for everyone.

We are here today to ask for a seed round investment to help us scale our user acquisition, expand our development team, and solidify our position as the leading platform for strength training. We are not just building an app; we are building the future of fitness.

12reps: Investing in the Future of Strength Training for Longevity By Will Duru, Founder & CEO

The Problem: The Untapped Potential in Every Gym

I want you to picture someone I call the “Wandering Gym-Goer.” You’ve seen them. They walk into the gym, look around at all the complicated machines, maybe do a few bicep curls, walk on the treadmill for a bit, and then leave. They are trying. They are showing up. But they don’t have a plan. This is the reality for millions of people. They are investing their time and money into their health, but they are getting almost nothing in return. This leads to frustration, a feeling of failure, and eventually, they just give up.

This is a huge problem, but it’s also a huge opportunity. The global fitness app market is a multi-billion dollar industry, projected to be worth over $12 billion in 2025. [1] But it is filled with apps that are all the same. They offer generic workout videos or simple tracking tools that don’t actually help people get results. There is a massive gap in the market for a solution that is intelligent, personalised, and effective.

And the timing for this could not be better. We are at a unique moment where several powerful trends are coming together. First, the world has woken up to the importance of strength training. It is no longer just for bodybuilders. It is now widely recognised by doctors and scientists as one of the most important things you can do for your health and longevity, especially as you get older. [2] Second, AI has reached a point where it can deliver true personalisation at a massive scale. And third, people are looking for authenticity. They are tired of faceless corporations. They want to connect with real experts who they can trust. As a trainer with over a decade of experience and a genuine passion for helping people, I am that expert.

4-Day Push Pull Legs Program for Muscle Gain and Fat Loss | 12Reps app

Our Solution: 12reps - Intelligent Strength Training, Simplified

So, how do we solve this problem? We built 12reps from the ground up to be the solution I always wished I could give my clients. It is built on three core features that make it unlike any other app on the market.

First, we have AI-Powered Personalisation. When you first open the app, it asks you a few simple questions: What are your goals? What equipment do you have access to, whether at home or in a commercial gym? What is your current fitness level? Based on your answers, our AI instantly generates a complete, progressive workout plan that is tailored specifically to you. It’s not a random collection of exercises; it’s a structured program designed to get you results.

Second, we have an Expert-Backed Exercise Library. I personally filmed and wrote the instructions for over 1,500 exercises. Each one comes with a high-quality video demonstration and clear, simple cues to ensure you are performing the movement with perfect form. This is crucial for preventing injury and getting the most out of every single rep.

Third, we have Seamless Progress Tracking. The app makes it incredibly easy to log your sets, reps, and the weights you lift. It then turns that data into simple, beautiful graphs that show you exactly how much stronger you are getting over time. This is the secret to staying motivated. When you can see your progress, you want to keep going.

But our real “secret sauce” is our authenticity. I am not a Silicon Valley tech bro who just saw a market opportunity. I am a trainer who has been in the trenches with real people, helping them overcome these exact struggles for years. We are not targeting teenagers who want to look good on TikTok. We are targeting a motivated and underserved demographic—people in their 30s, 40s, and 50s who are serious about their long-term health. We are giving them the expertise of a personal trainer, which would normally cost hundreds of pounds a month, for just £9.99 a month.

strength training app

Traction: The Proof is in the Progress

This isn’t just an idea. We have built the product, we have launched it, and the response has been incredible. I didn’t just identify the problem; I lived it with my clients, and then I built the solution myself. And it is working.

In just a few short months, with a tiny marketing budget, we have already achieved over 2,500 downloads. More importantly, we are converting those downloads into loyal, paying customers. We have almost 1,000 active subscriptions, which has already started to generate real revenue. This proves that people are not just willing to try our app; they are willing to pay for it because they see its value and everything is organic 

Our users are not just downloading the app and forgetting about it. They are using it. Our engagement metrics show that a significant percentage of our users are completing at least three workouts per week. They are following the plans, they are tracking their progress, and they are getting stronger. Our user retention is strong, and our App Store ratings are consistently high, with glowing reviews from people who tell us that 12reps has finally given them the confidence and the plan they needed to succeed.

This early traction is the most important signal we have. It shows that we have found a real pain point and that our solution is resonating with our target audience. We have achieved product-market fit. Now, we are ready to scale.

The Ask & The Vision: Building the Global Standard

We are seeking a seed investment to pour fuel on this fire. We want to use this funding to achieve three key goals.

First, User Acquisition. We will scale our marketing efforts to reach a wider audience. We know who our customer is, and we know how to reach them. We will invest in paid social media, collaborations with other trusted fitness influencers, and content marketing to establish 12reps as the go-to resource for strength training.

Second, Product Development. We will expand our small engineering team to make our app even better. We want to enhance our AI capabilities, integrate with popular wearables like the Apple Watch, and build out more community features to connect our users with each other.

Third, Operations. We will hire a few key people to help us manage our growth and provide world-class support to our customers.

Our vision is not just to be another fitness app. Our vision is to become the global standard for strength training. In 24 months, we aim to be the leading app for strength training in the UK and the US, with over 10-20,000 paying subscribers. In 5 years, we plan to expand globally, integrate with connected fitness hardware, and build a comprehensive health platform that also includes nutrition and recovery coaching.

Investing in 12reps is an opportunity to get in on the ground floor of a company that is solving a real problem in a massive, growing market. You are investing in a proven founder with deep domain expertise and a passion for the mission. You are investing in a scalable technology platform that is already showing incredible traction. And you are investing in a company with a clear path to profitability, based on a simple and proven subscription model.

Thank you for your time. I am ready to answer any questions you may have.

Strength Training in Your 30s and 40s: Why Personal Training (Tower Bridge/London Bridge)

References

  1. [1] Grand View Research. (2024). Fitness App Market Size, Share & Trends Analysis Report. https://www.grandviewresearch.com/industry-analysis/fitness-app-market
  2. [2] Westcott, W. L. (2012). Resistance training is medicine: effects of strength training on health. Current sports medicine reports, 11(4), 209-216. https://journals.lww.com/acsm-csmr/fulltext/2012/07000/resistance_training_is_medicine__effects_of.11.aspx

Why Strength Training Is the King of Longevity | The Benefits of Lifting Weights at 29

strength training app

By Will Duru, BSc (Hons) Sport & Exercise Science Award-winning Personal Trainer with 10+ years in strength training & recovery

If you’re 29 (man or woman), now is one of the best times to start strength training seriously. Below I explain in simple terms why strength training is the “king” for longevity, how it builds muscle, and how it transforms your body, mind, confidence and productivity as you go through adulthood.

Strength training is the king of longevity

  • Observational research shows people who do strength (resistance) training have a lower risk of death, even after adjusting for cardio and other habits. 
 
  • One meta-analysis showed resistance exercise is tied to about a 21% reduction in all-cause mortality; when combined with aerobic activity, the benefit may go up. 
 
  • Another study found that just 90 minutes per week of strength training was linked to slower biological ageing by nearly 4 years. 
 
  • Harvard published findings that weightlifting alone was linked to a 9–22% lower risk of dying during follow-up periods. 

So strength work isn’t just about muscles or looks. It gives you years, better health, and resistance to disease.

Strength Training in Your 30s and 40s: Why Personal Training (Tower Bridge/London Bridge)
personal trainer showing clients exercises

Why at age 29 you should care (men or women)

  • Muscle mass and strength begin to slowly decline from around age 30 onward (if you don’t fight it).
 
  • Early intervention helps you build a higher “reserve.” When later life challenges (injury, illness, hormonal change) come, you have a buffer.
 
  • At 29, your joints, recovery ability, hormones, and metabolic systems are still in good condition. If you start now, gains come faster and adaptation is easier.
 
  • It prevents future loss of bone density, muscle, insulin sensitivity, and mobility problems.
 
  • For women, strength training helps offset hormonal changes and osteoporosis risks. 

 

So the younger you begin (with good coaching/form), the more compounded benefits you’ll see over decades.

Strength training = building muscle (in the right way)

  • Muscle grows when you place it under stress (load or resistance) and then allow recovery.
 
  • You force adaptation: muscle fibers get micro damage, then rebuild stronger.
 
  • Proper volume, intensity, rest, nutrition matter.
 
  • Strength training also improves hormonal environment (testosterone, IGF-1 etc.), which supports growth.
 
  • Muscle is metabolically active. More muscle helps your metabolism, glucose handling, body composition.
 
  • As you gain muscle, you become more capable in daily life and sport.
 

 

Without strength training, most adults over time lose lean mass and gain fat. The worst combo.

Strength Training in Your 30s and 40s: Why Personal Training (Tower Bridge/London Bridge)
Download The 12REPS App

Mental, confidence, productivity — the hidden gains

Mental & mood

  • Resistance training produces endorphins and positive mood effects. 
  • Reviews show that strength training reduces anxiety and depression, boosts cognition and self-esteem.
  • Regular physical training improves sleep, lowers stress, and clears mental fog.
  • Also, the act of overcoming weights teaches grit, mental resilience.

 

Confidence & self-belief

  • Each gain (lift more, progress) reinforces that “I can improve.” That mindset spills into other life areas.
  • You see changes in posture, physique, strength — that feeds confidence.
  • You carry yourself differently: you feel more capable, less fragile.

 

Productivity & adulthood

  • Energy improves. You feel stronger, more energetic in daily tasks and work.
  • Better physical health means fewer sick days, fewer aches.
  • Mental clarity, discipline from training transfer into work, time management, and stress handling.
  • You become someone who executes goals, pushes limits. That attitude helps in business, relationships, and life.
strength training app
Download The 12REPS App

How strength training changes your life going into adulthood

  • You age more slowly. You fight disease.
  • You preserve mobility and independence in later years.
  • Your body composition stays healthier: less fat gain, more lean muscle.
  • If your mental health baseline is higher, you resist mood swings or burnout better.
  • You walk into your 30s, 40s, and 50s with strength, not decay.

Summary & call to action

Strength training is more than muscle. It is your insurance policy for a longer, healthier, sharper life.

At 29, your body is primed — don’t leave gains to chance. Start a program that is smart, sustainable, and progressive.

Physically: you build muscle, boost metabolism, and prevent decline.

Mentally: you manage stress, mood, and resilience.

Confidence & productivity: the mindset of strength spills into every part of your life.

If you like, I can send you a sample beginner program (4–8 weeks) to start strength training safely. Do you want me to send it?

strength training app
Download The 12REPS App

 

  1. Harvard Health Publishing (2022)Strength training might lengthen life

    https://www.health.harvard.edu/staying-healthy/strength-training-might-lengthen-life

  2. National Library of Medicine (2023)Resistance training and mortality risk: A systematic review and meta-analysis

    https://pmc.ncbi.nlm.nih.gov/articles/PMC10199130/

  3. Prevention (2024)Strength training adds years to your life, study finds

    https://www.prevention.com/fitness/a63238499/strength-training-adds-years-to-your-life-study/

  4. University Hospitals (2024)The unique benefits of strength training for women

    https://www.uhhospitals.org/blog/articles/2024/04/the-unique-benefits-of-strength-training-for-women

  5. Vail Health (2023)Empowering the mind and body: The role of strength training in mental health and aging

    https://www.vailhealth.org/news/empowering-the-mind-and-body-the-role-of-strength-training-in-mental-health-aging

  6. National Library of Medicine (2014)Resistance exercise training and mental health: A meta-analysis

    https://pmc.ncbi.nlm.nih.gov/articles/PMC4090891/

 

The Ultimate 3-Day Advanced HIIT Workout for Maximum Fat Burn and Muscle Growth

The Ultimate 3-Day Advanced HIIT Workout for Maximum Fat Burn and Muscle Growth

By Will Duru, BSc (Hons) Sport and Exercise Science

As a personal trainer with over a decade of experience in strength training and recovery, I’ve seen countless fitness trends come and go. But one training method has consistently delivered incredible results for my clients: High-Intensity Interval Training (HIIT). When combined with strategic strength training, HIIT becomes a powerful tool for torching fat, building lean muscle, and achieving peak physical condition. My name is Will Duru, and I’m here to guide you through a 6-week advanced HIIT program designed to get you in the best shape of your life.

This isn’t your average workout plan. This is a scientifically-backed, 3-day split that will push your limits and redefine what you thought was possible. We’ll combine explosive HIIT circuits with targeted strength training to create a powerful stimulus for fat burning and muscle building. This program is designed for individuals who are ready to elevate their fitness to the next level and achieve a lean, powerful physique.

Personal Training (Tower Bridge/London Bridge)

Why HIIT is a Game-Changer for Fat Loss

HIIT is a training method that involves short bursts of intense, all-out effort followed by brief recovery periods. This approach has been scientifically proven to be incredibly effective for fat loss, and for several key reasons:

  1. The Afterburn Effect (EPOC): One of the biggest advantages of HIIT is its ability to boost your metabolism for hours after your workout is over. This phenomenon, known as Excess Post-exercise Oxygen Consumption (EPOC), means your body continues to burn calories at an elevated rate long after you’ve left the gym. In fact, studies have shown that HIIT can burn 25-30% more calories than other forms of exercise [1]
 
  1. Time Efficiency: Let’s be honest, we’re all busy. HIIT workouts are incredibly time-efficient, allowing you to achieve a full-body workout and significant cardiovascular benefits in a fraction of the time required for traditional cardio. This makes it a sustainable option for those with demanding schedules.
  1. Hormonal Response: Intense exercise, such as HIIT, triggers a powerful hormonal response, including the release of growth hormone and adrenaline. These hormones play a crucial role in fat mobilisation, helping your body tap into stubborn fat stores for energy.
The Ultimate 3-Day Advanced HIIT Workout for Maximum Fat Burn and Muscle Growth

The Power of Combining HIIT and Strength Training

While HIIT is a fantastic tool for fat loss, combining it with strength training is where the real magic happens. This powerful duo creates a synergistic effect that accelerates your results and builds a well-rounded, athletic physique.

Strength training builds and maintains lean muscle mass, which is metabolically active tissue. The more muscle you have, the more calories your body burns at rest. When you combine this with the intense calorie-burning effects of HIIT, you create a powerful fat-loss machine. As one study found, participants who engaged in high-intensity resistance training exercises experienced more significant strength improvements and greater fat loss compared to those doing medium-intensity workouts [2].

This program is designed to give you the best of both worlds. We’ll use HIIT circuits to elevate your heart rate and torch calories, followed by targeted strength training exercises to build muscle and sculpt your physique. This approach ensures you’re not just losing weight, but building a strong, lean, and powerful body.

Strength Training Is Key to Your Health

Your Digital Personal Trainer: The 12Reps App

To get the most out of this advanced program, I highly recommend using the 12Reps app. This powerful workout tracker app and strength training app will be your digital personal trainer, guiding you through every exercise with video demonstrations, tracking your progress, and timing your rest periods to the second.

The app’s “Build Your Routine” feature allows you to create this entire program, plan your workouts, and monitor your progress over the 6 weeks. You can track your weights, reps, and rounds, ensuring you’re consistently pushing your limits and making progress. Download the 12Reps app and start your 7-day free trial today, it’s an investment in your health and longevity.

The 6-Week Advanced HIIT Workout Program

This program is designed as a 3-day split, targeting different muscle groups and energy systems on each day. Remember to start each workout with a 1k run to warm up your body and prepare for the intensity to come.

Understanding the Science Behind This Program

The beauty of this advanced HIIT program lies in its strategic design. Each workout is carefully crafted to maximise both fat burning and muscle building through specific training principles:

Progressive Overload: Throughout the 6 weeks, you’ll gradually increase the intensity, weight, or volume to ensure continuous adaptation and improvement. This principle is fundamental to both strength training and cardiovascular fitness.

Metabolic Stress: The short rest periods and high-intensity nature of these workouts create significant metabolic stress, which triggers muscle growth and fat loss. Your body will be forced to adapt by becoming more efficient at burning fat and building lean muscle.

Movement Variety: By incorporating different movement patterns—from explosive power movements like dumbbell snatches to grinding strength exercises like leg presses—we ensure your body never adapts completely, thereby maintaining consistent progress.

Nutrition and Recovery for Maximum Results

While this workout app will guide you through every exercise, remember that your results depend on more than just training. Proper nutrition and recovery are crucial components of any successful transformation.

Hydration: HIIT workouts are incredibly demanding on your cardiovascular system. Ensure you’re drinking plenty of water before, during, and after your workouts. Dehydration can significantly impact performance and recovery.

Post-Workout Nutrition: Within 30 minutes of completing your workout, consume a combination of protein and carbohydrates to support muscle recovery and replenish energy stores. This is when your body is most receptive to nutrients.

Sleep Quality: Your body repairs and grows stronger during sleep. Aim for 7-9 hours of quality sleep each night to maximise the benefits of your training and support longevity.

Tracking Your Progress with the 12Reps App

The 12Reps app isn’t just a workout tracker app—it’s your complete fitness companion. Here’s how to maximise its potential for this program:

Custom Workout Creation: Use the “Build Your Routine” feature to input each day’s workout exactly as outlined. The app will guide you through proper form with video demonstrations and ensure you’re hitting the right intensity.

Rest Period Timing: The precise 45-second and 1-minute rest periods are essential for the effectiveness of this program. The app’s built-in timer takes the guesswork out of rest periods, ensuring you maintain the right intensity throughout your workout.

Progress Tracking: Document your weights, reps, and your feelings after each workout. This data becomes invaluable for adjusting the program and seeing your progress over the 6 weeks.

Heart Rate Monitoring: If you have a heart rate monitor, the app can help you stay in the optimal training zones for maximum fat burning and cardiovascular benefits.

Day 1: Full Body Power

Exercise

Reps

Rounds

Rest

Dumbbell Snatch

16 (8 per side)

4

45 seconds

Dumbbell Reverse Lunges

16 (8 per side)

4

45 seconds

Bodyweight Press/Knee Press

10

4

45 seconds

Session 1: Strength Focus

Exercise

Sets

Reps

Weight

Leg Press

5

15

50-100kg

Leg Curl

4

12

Moderate

Leg Extension

4

20

Light

Dumbbell Glute Bridge

4

15

30kg

Dumbbell RDL

4

12

Moderate

Session 2: HIIT Circuit

Exercise

Reps

Rounds

Rest

Airbike

10 calories

4

45 seconds

Plank Twisting

30

4

45 seconds

Kettlebell Gorilla Row

16 (8 per hand)

4

45 seconds

Day 3: Upper Body & Core

Session 1: Strength Focus

Exercise

Sets

Reps

Weight

Lat Pulldown

4

12

Moderate

Machine Chest Press

4

12

Moderate

Machine Assisted Pull-ups

4

8-10

As needed

Session 2: HIIT Circuit

Exercise

Reps

Rounds

Rest

Rowing

200 meters

4

45 seconds

Dumbbell Goblet Squats

10

4

45 seconds

Chest to Floor Burpees/Knee Press-ups

10

4

45 seconds

Finisher

Exercise

Reps

Rounds

Rest

Sledge Push

20 meters

4

1 minute

Kettlebell Farmer’s Carry

20 meters

4

1 minute

200-meter Run

1

4

1 minute

Your Transformation Awaits

This 6-week advanced HIIT program is designed to be challenging, but the results will be worth it. By combining the power of HIIT with strategic strength training, you’ll unlock a new level of fitness, burn stubborn fat, and build a lean, powerful physique.

Remember to listen to your body, focus on proper form, and use the 12Reps app to track your progress. Your strongest, most confident self is within reach. Download the app, start your 7-day free trial, and let’s get to work.

strength training app

References

[1] Healthline. (2025). 7 Benefits of High Intensity Interval Training (HIIT). https://www.healthline.com/nutrition/benefits-of-hiit

[2] ISSA. (2024). HIIT and Strength Training – Should You Do Both?. https://www.issaonline.com/blog/post/hiit-and-strength-training-should-you-do-both

The Ultimate 3-Day Strength Training Split for Women: A Beginner’s Guide to Building Muscle

Strength Training Is Key to Your Health

By Will Duru, BSc (Hons) Sport and Exercise Science

As a personal trainer with over a decade of experience, I’ve seen firsthand how strength training for women can be a life-changing journey. It’s not just about lifting weights; it’s about building confidence, resilience, and a body that’s as strong as your mind. My name is Will Duru, and I’m here to guide you through the ultimate 3-day strength training split for women, a program designed to build dense, lean muscle, boost your productivity, and get you in the best shape of your life.

I’ve worked with countless women who were initially hesitant to start strength training. They were worried about being perceived as “bulky,” felt intimidated by the gym, or simply didn’t know where to start. But once they embraced a structured women’s workout routine, the transformation was incredible. They not only lost fat and built lean muscle, but they also discovered a newfound sense of empowerment that carried over into every aspect of their lives.

This guide is for you—the woman who is ready to take control of her health and unlock her full potential. We’ll cover everything from the importance of strength training to a detailed 12-week program, all designed to be simple, effective, and easy to follow.

# The Ultimate 3-Day Strength Training Split to Embrace Your Curves By Will Duru, BSc (Hons) Sport and Exercise Science

Why a 3-Day Split is Perfect for Women

One of the biggest mistakes I see is overtraining. More is not always better, especially when you’re starting out. A 3-day strength training split for women is the perfect frequency for several reasons:

  • Optimal Recovery: It allows for 48-72 hours of rest between sessions, which is crucial for muscle repair and growth [1].
  • Prevents Burnout: A 3-day routine is sustainable and fits into a busy schedule, reducing the risk of burnout.
  • Maximises Results: It provides enough stimulus to build muscle and strength without the negative effects of overtraining, such as fatigue and increased injury risk.

The Morning Workout Advantage: Productivity and Mental Calm

I’m a huge advocate for morning workouts, especially for busy women. Starting your day with a challenging women’s workout routine does more than just burn calories; it sets the tone for the entire day.

“Exercise has been shown to have a positive impact on cognitive function, including memory, attention, and problem-solving skills. It can also help to reduce stress and anxiety, leading to a more positive and productive work environment.” [2]

When you conquer a tough workout first thing in the morning, you’re proving to yourself that you can do hard things. This floods your brain with endorphins, creating a sense of mental clarity and calm that will make you unstoppable at work. I’ve seen clients go from feeling overwhelmed and stressed to being focused, productive, and in control, all thanks to a 45-minute morning strength session.

The Ultimate 3-Day Strength Training Split to Embrace Your Curves By Will Duru, BSc (Hons) Sport and Exercise Science

Your Secret Weapon: The 12Reps App

To make this journey as simple and effective as possible, we will use the 12Reps app. Think of it as your personal trainer in your pocket. It’s a powerful strength training and weightlifting app that guides you through every exercise, tracks your progress, and times your rest periods. You can build this entire program right in the app, plan your workouts ahead of time, and stay motivated every step of the way. Download the 12Reps app and start your 7-day free trial today. It’s time to invest in yourself.

About the 12reps App: Your Complete Workout Planner and Tracker 2025 and 2026

Nutrition: The Fuel for Your Transformation

You can’t out-train a bad diet. Nutrition is the cornerstone of building muscle and losing fat. Let’s break it down simply.

  • Protein: The building blocks of muscle. Aim for 1.6-2.2g per kg of body weight.
  • Fats: Essential for hormone production and overall health. Aim for 0.8-1.0g per kg of body weight.
  • Carbohydrates: Your body’s primary fuel source. These will fill the rest of your daily calorie needs.

Nutrition Scenarios:

Here are two common scenarios. Use these as a starting point and adjust based on your progress.

Scenario 1: 55kg Woman Wants to Gain 10kg of Muscle

To gain muscle, you need to be in a slight calorie surplus (eating more calories than you burn).

  • Calories: ~2,300 kcal
  • Protein: 110g (440 kcal)
  • Fats: 55g (495 kcal)
  • Carbohydrates: 366g (1,465 kcal)

Scenario 2: 80kg Woman Wants to Lose 10kg of Body Fat

To lose fat, you need to be in a calorie deficit (eating fewer calories than you burn).

  • Calories: ~2,100 kcal
  • Protein: 160g (640 kcal)
  • Fats: 64g (576 kcal)
  • Carbohydrates: 221g (884 kcal)

The 12-Week Beginner Program

This program is designed to build a solid foundation of strength and muscle. It’s split into two 6-week phases. We will focus on simple and effective exercises, avoiding overly complex movements.

The Warm-Up (Perform before every workout)

A proper warm-up is non-negotiable. It prepares your body for the work to come and helps prevent injuries.

Activity

Duration

Incline Treadmill Walk, Rower, or Cycle

10-15 minutes

World’s Greatest Stretch

5 reps per side

Cat-Cow

10 reps

Bodyweight Squats

15 reps

Now, let’s get to the workouts. Remember to use the 12Reps app to track your sets, reps, weight, and rest periods!

Phase 1 (Weeks 1-6): Foundation Building

This phase focuses on learning proper movement patterns and building a base level of strength. We’ll use single sets to allow you to focus on technique.

Day 1: Upper Body Focus

Exercise

Sets

Reps

Weight

Rest

Dumbbell Chest Press

1 warm-up + 4 working

10-12

Start light, progress weekly

90 seconds

TRX Rows

1 warm-up + 4 working

10-12

Bodyweight

90 seconds

Dumbbell Shoulder Press

1 warm-up + 4 working

10-12

Light to moderate

90 seconds

Kettlebell Single-Arm Row

1 warm-up + 4 working

10-12 per arm

Moderate weight

90 seconds

Machine Chest Press

1 warm-up + 4 working

10-12

Light to moderate

90 seconds

Day 2: Lower Body Focus

Exercise

Sets

Reps

Weight

Rest

Dumbbell Goblet Squats

1 warm-up + 4 working

10-12

Moderate weight

2 minutes

Dumbbell Romanian Deadlifts

1 warm-up + 4 working

10-12

Moderate weight

2 minutes

Dumbbell Lunges

1 warm-up + 4 working

10-12 per leg

Light to moderate

90 seconds

Kettlebell Swings

1 warm-up + 4 working

15-20

Moderate weight

90 seconds

Machine Leg Press

1 warm-up + 4 working

10-12

Moderate weight

2 minutes

Day 3: Full Body Focus

Exercise

Sets

Reps

Weight

Rest

TRX Push-Ups

1 warm-up + 4 working

8-12

Bodyweight

90 seconds

Dumbbell Bent-Over Row

1 warm-up + 4 working

10-12

Moderate weight

90 seconds

Dumbbell Thrusters

1 warm-up + 4 working

10-12

Light to moderate

2 minutes

Sled Push

1 warm-up + 4 working

20 meters

Light to moderate

2 minutes

TRX Plank

1 warm-up + 4 working

30-45 seconds

Bodyweight

90 seconds

The Ultimate 3-Day Strength Training Split for Women: A Beginner’s Guide to Building Muscle and Boosting Productivity

Phase 2 (Weeks 7-12): Intensity and Muscle Building

Day 1: Upper Body Focus

Main Exercises:

Exercise

Sets

Reps

Weight

Rest Period

Dumbbell Chest Press

1 warm-up + 4 working

8-10

Increase from Phase 1

2 minutes

TRX Rows

1 warm-up + 4 working

8-10

Bodyweight

2 minutes

Dumbbell Shoulder Press

1 warm-up + 4 working

8-10

Increase from Phase 1

2 minutes

Kettlebell Single-Arm Row

1 warm-up + 4 working

8-10 per arm

Increase from Phase 1

2 minutes

Machine Chest Press (Drop Set)

1 warm-up + 4 working

8-10, then drop weight for 5-8 more

Heavy to moderate

2 minutes

Superset A (Perform exercises back-to-back):

Exercise

Sets

Reps

Weight

Rest Period

Dumbbell Flyes

4

10-12

Light to moderate

No rest between exercises

TRX Face Pulls

4

12-15

Bodyweight

90 seconds after superset

Superset B:

Exercise

Sets

Reps

Weight

Rest Period

Dumbbell Lateral Raises

4

12-15

Light weight

No rest between exercises

Dumbbell Bicep Curls

4

10-12

Moderate weight

90 seconds after superset

Day 2: Lower Body Focus

Main Exercises:

Exercise

Sets

Reps

Weight

Rest Period

Dumbbell Goblet Squats

1 warm-up + 4 working

8-10

Increase from Phase 1

2 minutes

Dumbbell Romanian Deadlifts

1 warm-up + 4 working

8-10

Increase from Phase 1

2 minutes

Dumbbell Bulgarian Split Squats

1 warm-up + 4 working

8-10 per leg

Moderate weight

2 minutes

Kettlebell Swings

1 warm-up + 4 working

20-25

Increase from Phase 1

2 minutes

Machine Leg Press (Drop Set)

1 warm-up + 4 working

8-10, then drop weight for 5-8 more

Heavy to moderate

2 minutes

Superset A:

Exercise

Sets

Reps

Weight

Rest Period

Dumbbell Lunges

4

10-12 per leg

Moderate weight

No rest between exercises

TRX Jump Squats

4

10-15

Bodyweight

90 seconds after superset

Superset B:

Exercise

Sets

Reps

Weight

Rest Period

Dumbbell Calf Raises

4

15-20

Moderate weight

No rest between exercises

TRX Single-Leg Glute Bridge

4

10-12 per leg

Bodyweight

90 seconds after superset

Day 3: Full Body Focus

Main Exercises:

Exercise

Sets

Reps

Weight

Rest Period

TRX Push-Ups

1 warm-up + 4 working

6-10

Bodyweight

2 minutes

Dumbbell Bent-Over Row

1 warm-up + 4 working

8-10

Increase from Phase 1

2 minutes

Dumbbell Thrusters

1 warm-up + 4 working

8-10

Increase from Phase 1

2 minutes

Sled Push

1 warm-up + 4 working

30 meters

Increase from Phase 1

2 minutes

Machine Lat Pulldown (Drop Set)

1 warm-up + 4 working

8-10, then drop weight for 5-8 more

Heavy to moderate

2 minutes

Superset A:

Exercise

Sets

Reps

Weight

Rest Period

TRX Plank

4

45-60 seconds

Bodyweight

No rest between exercises

Kettlebell Russian Twists

4

20 total

Light weight

90 seconds after superset

Superset B:

Exercise

Sets

Reps

Weight

Rest Period

Dumbbell Tricep Extensions

4

10-12

Light to moderate

No rest between exercises

TRX Tricep Press

4

8-12

Bodyweight

90 seconds after superset

 

Strength Training in Your 30s and 40s: Why Personal Training (Tower Bridge/London Bridge)

Building Your Routine in the 12Reps App

The 12Reps app makes following this program incredibly simple. Here’s how to set it up:

  1. Open the app and navigate to “Build Your Routine”
  2. Select “Custom Workout”
  3. Add each exercise from the tables above
  4. Set your target sets, reps, and rest periods
  5. Use the built-in stopwatch to time your rest periods perfectly
  6. Track your weights and progress automatically
  7. Plan your workouts ahead of time for the week

The app will guide you through each workout, show you proper form with video demonstrations, and track your progress over time. It’s like having a personal trainer with you every step of the way.

About the 12reps App: Your Complete Workout Planner and Tracker 2025 and 2026

The Science of Strength Training and Longevity

Strength training for women isn’t just about looking good; it’s about living longer and better. Research shows that regular resistance training can increase lifespan, improve bone density, enhance cognitive function, and reduce the risk of chronic diseases [3]. This is why I call strength training the ultimate longevity practice.

When you build muscle, you’re not just changing your appearance; you’re investing in your future self. Muscle tissue is metabolically active, meaning it burns calories even at rest. This helps maintain a healthy weight and metabolism as you age. Additionally, the discipline and mental toughness you develop in the gym translates to every area of your life.

Overtraining: Why Less Can Be More

One of the biggest mistakes I see women make is thinking they need to train every day to see results. This couldn’t be further from the truth. Overtraining can actually hinder your progress by:

  • Increasing cortisol levels, which can lead to fat storage
  • Suppressing your immune system
  • Causing chronic fatigue and mood swings
  • Increasing injury risk

A 3-day strength training split for women provides the perfect balance of stimulus and recovery. Your muscles don’t grow in the gym; they grow during rest. This program gives your body the time it needs to repair, rebuild, and come back stronger.

Your Transformation Starts Now

This 12-week program is just the beginning of your journey. It’s designed to build a solid foundation of strength, teach you proper movement patterns, and help you develop the habit of consistent training. By the end of these 12 weeks, you’ll be stronger, more confident, and ready to take on more advanced challenges.

Remember, every rep counts. Every workout matters. Every day you choose to invest in yourself is a day you’re building the person you want to become. The 12Reps app will be your guide, your tracker, and your motivation. Download it today, start your 7-day free trial, and begin the transformation that will change not just your body, but your entire life.

Your strongest, most productive, and calmest self is waiting. It’s time to meet her.

References

[1] Harvard Health Publishing. (2019). Should you try kettlebells? https://www.health.harvard.edu/blog/should-you-try-kettlebells-2019021916025

[2] UCHealth. (2025). What women need to know about strength training. https://www.uchealth.org/today/what-women-need-to-know-about-strength-training/

[3] PubMed Central. (2017). Strength Training for Women as a Vehicle. https://pmc.ncbi.nlm.nih.gov/articles/PMC5523796/