How many reps should I be aiming for?
If you’re new to strength training, one of the first questions you may ask is:
How many reps should I be doing?
You may have heard that low reps build strength, moderate reps build muscle and high reps improve endurance. That is a useful starting point, but there is no single perfect rep range for every person or exercise.
The number of reps you should aim for depends on:
Your goal
Your experience
The exercise
The weight you are using
How challenging the final few reps feel
Here is a simple guide:
Learning technique: 8–12 reps
Building strength: 3–6 reps
Building strength and muscle: 6–12 reps
Improving muscular endurance: 12–20+ reps
What are reps and sets?
A rep, short for repetition, is one complete movement of an exercise.
For example:
One squat is one rep
One push-up is one rep
One dumbbell press is one rep
A set is a group of reps completed before resting.
If your programme says:
3 sets of 10 squats
You would complete 10 squats, rest and then repeat that process twice more.
How many reps should I do for strength?
If your main goal is to become stronger, you will usually use a heavier weight for fewer reps.
A practical strength-focused range is:
3–6 reps per set
More experienced lifters may sometimes perform sets of 1–5 reps when working on maximal strength. However, very low-rep training requires good technique, appropriate loading and enough rest between sets.
Lower rep ranges are commonly used for compound exercises such as:
Squats
Deadlifts
Bench presses
Overhead presses
Rows
The weight should feel challenging, but your technique should remain controlled.
Heavy lifting is not automatically better. If the weight causes your form to break down, it is probably too heavy for the intended set.
How many reps should I do to build muscle?
A practical range for building muscle is:
6–12 reps per set
This range allows you to use a challenging weight while completing enough total work.
However, 6–12 reps is not a magic formula. Muscle can be built using lower or higher rep ranges when the weight is appropriate and the final few reps are sufficiently challenging.
The most important factors include:
Using enough resistance
Performing enough useful work
Training consistently
Progressing over time
Maintaining good technique
Recovering between sessions
A controlled set of 8 reps and a controlled set of 12 reps can both be productive.
How many reps should I do for muscular endurance?
If your goal is to help your muscles work for longer before tiring, you will generally use a lighter weight and complete more reps.
A common muscular-endurance range is:
12–20 or more reps per set
Higher rep ranges may be useful for:
Conditioning exercises
Accessory movements
Bodyweight exercises
Rehabilitation work
Exercises where heavier loading is less practical
Activities that require repeated muscular effort
Higher reps should still be controlled. Rushing through a set with poor technique does not make it more effective.
What is the best rep range for beginners?
For most beginners, a useful starting point is:
2–3 sets of 8–12 reps
This provides enough repetition to practise each movement without needing to use very heavy weights.
When starting strength training, the priority should be learning:
How to perform each exercise safely
Which muscles you should feel working
How to control the weight
How to choose an appropriate load
When to stop a set
How to progress gradually
The NHS also uses 8–12 reps as a straightforward general recommendation for muscle-strengthening activity.
People looking for beginner fitness classes in Penge or Forest Hill will usually benefit more from learning proper technique than from immediately lifting the heaviest weight possible.
Confidence, control and consistency should come before chasing personal bests.
How difficult should each set feel?
The weight you choose should match your target rep range.
Imagine your programme asks for 10 reps.
If you finish the set and could comfortably complete another 10, the weight is probably too light.
If your technique starts to break down after six reps, the weight is probably too heavy.
A suitable weight would normally allow you to complete all 10 reps with good form while feeling that you could only perform another two or three controlled reps.
This is sometimes described as leaving reps in reserve.
You do not need to calculate this perfectly. At the end of a set, ask yourself:
How many more good-quality reps could I have completed?
That question can help you judge whether the weight was appropriate.
Should I train to failure?
Training to failure means continuing a set until you cannot complete another repetition with acceptable technique.
You do not need to take every set to failure.
The final reps should often feel challenging, but repeatedly pushing every exercise to your absolute limit can create unnecessary fatigue, make it harder to maintain good form and increase the risk of injury.
For most general strength training, finishing with approximately one to three good reps remaining is a sensible approach.
You may occasionally work closer to failure on a controlled isolation exercise, such as a biceps curl or leg extension. It is usually less appropriate to force a heavy squat or deadlift until another rep becomes impossible.
Beginners should focus on technique, control and consistency rather than testing their limits in every session.
How many sets should I perform?
Most people can make progress with:
2–4 working sets per exercise
Beginners may start with two sets while learning the movements. A third set can be added as their confidence, fitness and recovery improve.
The appropriate number of sets depends on:
Your experience
The number of exercises in the session
How often you train
How challenging each set is
Your recovery
Your overall goal
More sets are not always better. Each set should have a clear purpose.
Do all exercises need the same rep range?
No.
Different exercises can use different rep ranges within the same session.
For example:
Squat: 3 sets of 5 reps
Dumbbell press: 3 sets of 8 reps
Seated row: 3 sets of 10 reps
Lateral raise: 4 sets of 15 reps
The squat uses fewer reps because it is a demanding compound exercise that can be performed with a heavier weight.
The lateral raise uses more reps because it involves a smaller movement and is usually performed with a lighter weight.
A well-designed programme selects the rep range according to the exercise and its purpose.
When should I increase the weight?
Increase the weight when you can consistently reach the top of your target rep range with good technique.
Imagine your programme says:
3 sets of 8–10 reps
Your first session might look like this:
Set one: 10 reps
Set two: 9 reps
Set three: 8 reps
Over time, you may progress to:
Set one: 10 reps
Set two: 10 reps
Set three: 10 reps
Once all three sets feel controlled and you could still complete another rep or two, increase the weight slightly.
Your reps may initially fall back towards eight. You then gradually build them up again.
This is a simple form of progressive overload.
Progress does not always require adding weight. You may also progress by:
Completing more reps
Improving your technique
Increasing your range of movement
Moving with greater control
Taking slightly less rest where appropriate
What if I cannot reach the minimum number of reps?
If your target is 8–10 reps but you can only complete five with good technique, reduce the weight.
The target range helps guide the load you choose.
Lowering the weight is not a step backwards. It allows you to complete the intended training, practice the movement properly and create a stronger foundation for future progress.
Is there a best rep range for weight loss?
There is no single weight-loss rep range.
Both lower- and higher-rep strength training can form part of an effective programme.
Weight loss is influenced by your overall energy balance, nutrition, activity levels and consistency. Your strength training should focus on helping you:
Maintain or build muscle
Become stronger
Improve your fitness
Train consistently
Progress safely
Choose your rep range according to the exercise and training goal rather than trying to maximise the number of calories burned during each set.
How Sound Fitness Studios can help
You do not need to work out every exercise, weight and rep range on your own.
At Sound Fitness Studios, our coaches select exercises, sets, reps and appropriate weights according to your experience and goals.
Our small group personal training in Forest Hill and small group personal training in Penge combine the motivation of training with others with more individual coaching than you would usually receive in a large class.
Our small group sessions include:
BASE, which helps beginners learn the foundations of strength training
LIFT, which focuses on strength, lifting technique and tracked progress
FORGE, which combines structured strength and conditioning
These small group fitness classes in Forest Hill and Penge are designed to help you understand what you are doing, improve your technique and progress with purpose.
For people who want fully individual support, we also offer personal training in Forest Hill and personal training in Penge.
Private personal training allows your coach to tailor every part of the programme to your goals, ability and starting point. Working with a personal trainer in Forest Hill or Penge can be particularly useful if you are completely new to training, returning after an injury or working towards a specific goal.
Whether you choose private personal training or small group PT, the aim is not to complete an arbitrary number of reps. It is to use the right exercises, weights and rep ranges to help you move forwards.
Takeaway
There is no single rep range that is best for everyone.
Lower reps with heavier weights are generally more suited to maximal strength. Moderate rep ranges offer a practical balance for building strength and muscle. Higher reps can help improve muscular endurance.
For most beginners, 2–3 sets of 8–12 controlled reps provide a useful starting point.
The most important things are choosing an appropriate weight, maintaining good technique and progressing gradually.
Your reps should have a purpose—not just be a number to reach.