How many sets and reps to build muscle

How many sets to do per week

What matters most for growth is how many hard sets each muscle gets over the week, not in a single session. In a meta-analysis, each extra weekly set added 0.37% muscle gain on average (Schoenfeld et al., 2017). The ACSM, which reviewed 137 systematic reviews with more than 30,000 people, recommends at least 10 sets per muscle per week for hypertrophy (Currier et al., 2026).

Sets per muscle per week
Sets	What to expect	Who it suits
Under 10	You grow, but below what the ACSM recommends	Deload weeks or when you are short on time
10 to 20	The range the studies back most	Most people
Over 20	May add a little more, but each set adds less	People with years of training who recover well

More does not always pay off. A review in young trained men found no difference between 12 to 20 sets and more than 20 for the quads and biceps, and proposed 12 to 20 sets per muscle group as a benchmark (Baz-Valle et al., 2022). With 67 studies and 2,058 people, another analysis confirmed that growth rises with volume, but each extra set adds a little less than the one before (Pelland et al., 2026).

How many reps to do per set

There is no magic number. A meta-analysis of 21 studies compared loads of up to 60% of your max with heavier ones: muscle grew about the same, although max strength rose more with the heavy loads (Schoenfeld et al., 2017). A later review concluded that you can build muscle with loads from about 30% of your max, as long as the set is hard (Schoenfeld et al., 2021).

Rep ranges for building muscle
Range	Upside	Downside
1 to 5	More max strength	You need more sets for the same growth and it loads the joints more
6 to 12	The most practical sweet spot for growth	None in particular
Over 12	Less weight, handy at home or with little equipment	Sets take longer and it is harder to get close to failure

In practice, moderate loads are the most efficient way to grow: very light ones drag each set out and very heavy ones need more sets for the same result (Schoenfeld et al., 2021). That is why the ACSM recommends loads of 1 to 12 rep max for hypertrophy, with an emphasis on 6 to 12 (American College of Sports Medicine, 2009). To pick the weight for each range, the 1RM calculator estimates your max and your working weights.

How close to failure to take each set

A set counts when it is hard. Ten reps with a weight you could move twenty times are not the same as ten reps with a weight that leaves you nearly out of breath. But you do not have to reach failure either: in a meta-analysis of 15 studies, training to muscular failure did not build more muscle than stopping a little short (Refalo et al., 2023).

Count your reps in reserve. When you finish a set, ask yourself how many more you could have done with good form. On the scale that measures it, an effort of 10 means 0 reps in reserve and a 9 means 1 (Zourdos et al., 2016).
If you have lots left, make it harder. Add weight or reps. The progressive overload guide explains when and how much to go up.
Save failure for a few exercises. On machines or isolation exercises it is safer to get close to failure than on a heavy squat.

How to fit sets and reps into your week

Pick your set target. If you are starting out, begin near 10 per muscle per week. If you have been training for a while, aim for 12 to 20.
Spread them over your days. With the same volume, training a muscle once, twice or three times a week gave similar growth (Schoenfeld et al., 2019). Split them however suits you.
Choose exercises and reps. Use 6 to 12 reps on the main lifts and keep higher ranges for accessories or for training at home.
Rest long enough. Resting more than 60 seconds between sets may give slightly more growth, and going past 90 seconds showed no extra benefit (Singer et al., 2024). The ACSM suggests 1 to 2 minutes (American College of Sports Medicine, 2009).

Example: if you train 3 days a week and want 12 sets for your chest, that is 12 ÷ 3 = 4 sets per session. For instance, 2 sets of barbell bench press for 6 to 8 reps and 2 of incline dumbbell bench press for 10 to 12. If you would rather skip the math, the muscle building routines already spread the volume across your days.

Common mistakes

Counting only one day's sets. What studies compare is the weekly total per muscle. Three sets of biceps once a week fall well short of the 10 or more the ACSM recommends.
Easy sets. Lots of sets far from failure add time, not muscle. Better fewer sets that are hard.
Obsessing over a range. Doing 8 or 10 reps matters far less than doing the sets you planned and making them harder over the weeks.
Ramping up volume overnight. Doubling your sets from one week to the next usually brings more soreness than progress. Add them gradually and see how you recover.

Sets and reps are only one part. For food, protein and rest, see the guide on how to build muscle.

Questions

Is 3x10 or 4x8 better for hypertrophy?

Both work. They both sit inside the 6 to 12 rep range (American College of Sports Medicine, 2009). What changes the result most is how many weekly sets you do per muscle and that they end close to failure.

How many sets should I do per exercise?

It depends on your weekly target. Divide the sets you want for a muscle by the number of exercises you do for it: 12 sets over 4 exercises is 3 sets per exercise.

Do high reps build muscle?

Yes. With hard sets, muscle grows about the same with light and heavy loads (Schoenfeld et al., 2017). That is why you can build muscle at home with dumbbells, bands or your own body weight.

How many sets and reps should a beginner do?

About 10 sets per muscle per week (Currier et al., 2026) and weights you can lift for 8 to 12 reps (American College of Sports Medicine, 2009). The beginner routines already follow that setup.

Sources

This guide is for information only and does not replace advice from a health professional.