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/

 

Personal Training in Tower Bridge SE1

personal training tower bridge

Most people join a gym hoping to get fit, lose weight, or build muscle. But after a few weeks, they lose motivation. The reason? No clear plan. Too much guesswork. No accountability.

Personal training changes that.

Instead of walking into the gym unsure of what to do, you show up with purpose. Every session has a goal. Every rep moves you forward.

That’s the power of working with a coach.

Why You’re Not Making Progress

It’s not that you’re not trying.

It’s that you’re not focused.

Random workouts don’t produce consistent results.

You might be:

• Copying routines from social media

• Using machines you’re not sure how to use

• Skipping workouts when life gets busy

Progress stalls. Frustration builds. Eventually, you stop.

Personal Training Gives You Structure

When you work with a personal trainer, everything changes.

You get:

• A plan tailored to your goals

• Real-time feedback on your form

• A consistent schedule

• Motivation to push when it counts

You’ll stop second-guessing your training.

You’ll start seeing results.

Why Tower Bridge SE1 Is the Ideal Location

If you live or work near Tower Bridge, convenience is on your side.

It’s easy to build training into your routine.

Whether you prefer early morning sessions, lunchtime workouts, or evening slots, there’s flexibility to make it work.

No long commutes. No excuses.

The 3-Step Process

1. Book a free consultation

We’ll talk through your goals, training history, and schedule.

2. Start your tailored program

Each workout is designed around your needs—no wasted effort.

3. Stay consistent and track results

With weekly check-ins and ongoing support, you’ll keep making progress.

Make the Next 3 Months Count

Without structure, most people plateau.

With personal training, you accelerate.

You’ll lift more. Move better. Feel stronger.

If you’re ready to stop wasting time and start making progress,

personal training in Tower Bridge SE1 is the fastest way forward.

person al training tower bridge