One of the most common questions in the gym is also one of the most confusing: how many sets should you actually do in a workout? Too few and you might not stimulate growth. Too many and you waste time, stall your progress, or worse, overtrain. The good news is that exercise science has given us fairly clear guidelines — and they are simpler than most fitness influencers would have you believe.

In this guide, we break down exactly how many sets to do per exercise, per muscle group, and per workout, whether you are a complete beginner or an experienced lifter. We will also cover how sets change with different goals, how long to rest between them, and a simple step-by-step workout structure you can use today.

What Counts as a “Set”?

A set is a group of consecutive repetitions (reps) of an exercise, performed without resting. For example, doing 10 press-ups in a row is one set of 10 reps. When trainers talk about sets in a workout, they usually mean working sets — the challenging sets that actually push your muscles. Warm-up sets with very light weight do not count toward your totals.

Most people write their training as sets x reps. So “3 x 10 press-ups” means three sets of ten press-ups. This shorthand is used throughout gyms across the UK, from high-street chains like PureGym and The Gym Group to independent strength clubs.

How Many Sets Per Exercise?

The number of sets per exercise depends mainly on your training experience:

• Beginners (0–6 months): 2–3 sets per exercise. Your body responds strongly to even small amounts of training, so keep it simple.
• Intermediate (6 months–2 years): 3–4 sets per exercise. This is the sweet spot for most regular gym-goers.
• Advanced (2+ years): 4–5 sets per exercise, sometimes more for lagging muscle groups.

If you are just starting out, two hard sets of an exercise will do far more for you than five half-hearted ones. Quality beats quantity every time. If you want a fuller plan for getting going, read our guide on how to start a fitness journey from scratch.

How Many Sets Per Muscle Group Per Week?

Modern research on training volume suggests that each muscle group grows best with roughly 10–20 hard sets per week. This is known as your weekly volume, and it matters more than the number of sets in any single session.

Here is a practical breakdown:

• Minimum effective dose: Around 6 sets per muscle group per week will maintain or slowly build muscle for most people.
• Optimal range: 10–20 sets per muscle group per week for steady muscle growth.
• Maximum recoverable: Beyond 20–25 sets, most people stop gaining extra benefit and recovery suffers.

You can split this volume across two or three sessions per week. For example, instead of doing 16 sets of chest exercises in one exhausting Monday session, you could do 8 sets on Monday and 8 sets on Thursday. Spreading volume out tends to produce better results and less soreness.

How Many Sets Per Workout Session?

A typical full workout session contains 12–24 total working sets, depending on the training split:

• Full-body workout (3x per week): 12–18 sets per session, covering all major muscle groups.
• Upper/lower split (4x per week): 14–20 sets per session, focused on half the body.
• Push/pull/legs (5–6x per week): 16–24 sets per session, focused on one movement pattern.

A session lasting 45–75 minutes is plenty. If your workouts regularly stretch past 90 minutes of hard sets, you are probably doing more than you need — or resting far too long between sets.

Sets for Different Goals

Goal: Building Strength

For pure strength, do 3–5 sets of 3–6 heavy reps on big compound lifts like squats, deadlifts, bench press, and overhead press. Rest 3–5 minutes between sets so you can lift heavy each time. Total sets per session can stay on the lower end because the intensity is high.

Goal: Building Muscle (Hypertrophy)

For muscle growth, do 3–4 sets of 8–15 reps per exercise, resting 60–120 seconds between sets. This is where most people should spend their time. Aim for that 10–20 weekly sets per muscle group range described above. Pairing this with enough protein makes a real difference — see our article on how to gain muscle effectively for the nutrition side.

Goal: Muscular Endurance

For endurance, do 2–3 sets of 15–25 reps with lighter weights and short rests of 30–60 seconds. Bodyweight circuits are a great fit here. If you enjoy high-rep bodyweight training, you might also like our guide to how many jumping jacks it takes to burn 100 calories.

Step-by-Step: Structuring Your Sets in a Workout

Here is a simple framework you can follow for any session:

1. Warm up (5–10 minutes). Light cardio plus 1–2 easy warm-up sets of your first exercise. These do not count as working sets.
2. Start with compound lifts. Do 3–5 sets of your main lift (squat, bench, deadlift, row, or overhead press) while you are fresh.
3. Add 2–3 accessory exercises. Do 3 sets each of exercises that target individual muscles, such as lunges, dumbbell rows, or press-ups.
4. Finish with 1–2 smaller movements. Do 2–3 sets of core work or isolation exercises like bicep curls or calf raises.
5. Count your total. Add up your working sets. If you are between 12 and 24, you are in the right zone.
6. Track and progress. Write down your sets, reps, and weights. Aim to add a rep or a little weight over time.

How Long to Rest Between Sets

Rest periods matter more than people think. As a rule of thumb:

• Strength (heavy, low reps): 3–5 minutes
• Muscle growth (moderate reps): 60–120 seconds
• Endurance (light, high reps): 30–60 seconds

Do not rush heavy sets. Resting properly lets you lift more weight, which drives better results than cramming in extra tired sets.

Signs You Are Doing Too Many Sets

More is not always better. Watch for these warning signs of excessive volume:

• Your strength is going down instead of up over several weeks
• You feel constantly sore and never fully recover between sessions
• Workouts take over 90 minutes and you feel drained, not energised
• Sleep quality or mood has worsened since you increased training
• You dread training sessions you used to enjoy

If several of these sound familiar, cut your sets by about a third for two weeks and see how you feel. Most people are surprised that they keep progressing — or even progress faster — on less volume.

Signs You Are Doing Too Few Sets

On the other hand, very low volume can stall progress:

• You finish workouts feeling like you barely trained
• No muscle soreness or fatigue at all, ever (a little is normal when progressing)
• Strength and muscle size have not changed in 2–3 months
• You are doing fewer than 6 sets per muscle group per week

The fix is simple: add one set per exercise, or add an extra training day, and reassess after a month.

Sample Workouts

Beginner Full-Body (3x per week, ~14 sets)

• Goblet squats: 3 x 10
• Press-ups (or knee press-ups): 3 x 8–12
• Dumbbell rows: 3 x 10 each side
• Glute bridges: 2 x 15
• Plank: 3 x 30 seconds

Intermediate Upper Body (~18 sets)

• Bench press: 4 x 8
• Seated row: 4 x 10
• Overhead press: 3 x 10
• Lat pulldown: 3 x 10
• Bicep curls: 2 x 12
• Tricep pushdowns: 2 x 12

Both sessions fit comfortably inside an hour, including warm-up. For official UK guidance on how much activity adults should aim for each week, see the NHS guidance on exercise and physical activity.

FAQs

Is 3 sets enough to build muscle?

Yes — 3 hard sets per exercise is enough for most people, especially when you train each muscle group twice a week. Research consistently shows that 3–4 sets per exercise produces excellent muscle growth, and doing far more only adds small extra benefits while increasing fatigue.

How many sets should a beginner do?

Beginners should do 2–3 sets per exercise and around 12–15 total sets per full-body session. New lifters respond to very low volumes, so there is no need to copy advanced programmes. Focus on learning good form first.

Can I do just 1 set per exercise?

Single-set training can maintain fitness and even build some strength, particularly for beginners or busy people. However, multiple sets produce meaningfully better muscle growth in most studies. If you are short on time, 2 sets is a good compromise.

Does it matter how many sets I do per week vs per workout?

Weekly volume per muscle group matters most. Whether you do 12 sets for chest in one session or split them into two sessions of 6, the results are similar — though splitting them up usually feels better and lets you train harder each time.

Should I count warm-up sets?

No. Only count working sets — the sets that challenge you and are taken close to muscular fatigue. Warm-up sets prepare your joints and nervous system but do not contribute meaningfully to muscle growth.