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The 12-Week, 5-Day Strength Split

By Will Duru, BSc (Hons) Sport and Exercise Science, Award-winning Personal Trainer with over 10 years of experience in strength training and optimising recovery.

One of the most common questions I receive from gym members is how to structure their training week effectively. The answer depends on how many days you can commit to training and how much time you can dedicate to each session. When a client wants to build strength, increase muscle mass, and stay consistent, I provide a clear framework that removes guesswork and creates accountability. This is the 5-day training split I use with clients who want measurable progress.

The program runs for 12 weeks, with five sessions per week and six exercises per session. Every workout is built around supersets: two exercises performed back-to-back with no rest in between, followed by 60 to 90 seconds of rest before the next set. This structure keeps sessions focused, increases training density, and ensures each workout is completed within a defined timeframe. You work harder and finish faster, progressing week after week.

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Day

Focus

Day 1

Chest & Back

Day 2

Legs & Core

Day 3

Shoulders & Biceps

Day 4

Rest

Day 5

Back, Hamstrings & Calves

Day 6

Full Body — Strength & HIIT

Day 7

Rest

Day 1 — Chest & Back

Superset

Exercise

Sets

Reps

A1

Barbell or Dumbbell Bench Press

4

8-4

A2

Bent Over Barbell Row

4

10-8

B1

Incline Dumbbell Press

3

10-8

B2

Single Arm Dumbbell Row

3

10

C1

press up, or knee press ups 

4

15-8

C2

Lat Pulldown

4

15-8

Will’s note: On the bench press, think about driving your chest up to the bar rather than just pushing your arms. On the row, pull your elbow back and hold the squeeze at the top for one second.

Day 2 — Legs & Core

Superset

Exercise

Sets

Reps

A1

Barbell Back Squat or Dumbbell goblet squats 

4

10-6

A2

Bodyweight plank 

4

30-second hold 

B1

Leg Press

5

15-8

B2

Dumbbell farmer’s carry 

5

10-20 meters 

C1

Walking Lunges

3

10  each leg

C2

Cable or Loop Resistance band Woodchop

3

12 each side

Will’s note: Your legs are your biggest muscle group — they respond to hard work. Don’t reduce the weight just because the superset is tough. The core work earns its place here, too; a strong core is what keeps your technique solid on the big lifts. 

Day 3 — Shoulders & Biceps

Superset

Exercise

Sets

Reps

A1

Seated Dumbbell Shoulder Press

4

10-6

A2

Barbell Bicep Curl

4

10-6

B1

Dumbbell lateral Raise

3

12

B2

Dumbbell hammer Curl

3

12

C1

Dumbbell Front Raise

3

10-8

C2

Rope biceps curl 

3

12

Will’s note: Lateral raises stop at shoulder height — going higher shifts the work onto your traps. Keep the weight light enough to control. On curls, slow the descent down; that’s where most of the muscle is built. 

Day 4 — Rest

Your muscles don’t grow during training — they grow during recovery. Use this day to walk, stretch, or do nothing. Coming back on Day 5 fresh is more valuable than pushing through tired. 

Day 5 — Back, Hamstrings & Calves

Superset

Exercise

Sets

Reps

A1

Barbell or kettlebell Deadlift

4

8–10

A2

Seated or standing Calf Raise

4

15

B1

Swiss ball leg curl 

4

10

B2

Kettlebell reverse lunges 

4

16

C1

Leg Curl (Machine)

3

12

C2

Cable Face Pull

3

15

Will’s note: The deadlift is the most important exercise in this programme. Flat back, hips back, drive through your heels. If your form starts to break, drop the weight. There is no version of this lift where ego is worth a back injury. 

Day 6 — Full Body (Strength + HIIT)

This is the hardest session of the week by design. Heavy compound work followed by conditioning. Expect to feel it. 

Superset

Exercise

Sets

Reps

A1

Kettlebell clean and press 

4

12

A2

Kettlebell swings 

4

12

B1

Kettlebell goblet Squat

4

12

B2

Kettlebell gorilla rows

4

16

C1

chest to floor burpees

4 rounds

40 sec on / 20 sec off

C2

Dumbbell snatch 

4 rounds

40 sec on / 20 sec off

Will’s note: Pace yourself on the HIIT finisher. The goal is max effort for 40 seconds, not a slow jog through it. If you need to scale down, reduce the number of rounds— not the intensity. 

How to Progress Over 12 Weeks

Phase

Weeks

Focus

Foundation

1–4

Learn the movements. Prioritise form overload.

Build

5–8

. Add 2.5–5kg to main lifts when you hit the top of the rep range.

Push

9–12

Increase load on the big lifts. Add a set to your weakest exercises.

The progress happens in the final four weeks — but only if you’ve done the work in the first eight. 

The Basics That Determine Everything

Protein.  Aim for 1.6g per kg of bodyweight every day. Without enough protein, your body has nothing to build with.


Sleep.  7–9 hours. Training breaks muscle down, sleep is when it’s rebuilt.


Consistency.  Five sessions a week is five hours out of 168. Show up, do the work, repeat.

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Will Duru

Level 4 Qualified Personal Training Coach Sports & Exercise Science BSc (Hons)

Disclaimer: The ideas in this blog post are not medical advice. They shouldn’t be used for diagnosing, treating, or preventing any health problems. Always check with your doctor before changing your diet, sleep habits, daily activities, or exercise. WILL POWER FITNESS isn’t responsible for any injuries or harm from the suggestions, opinions, or tips in this article.

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