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The short version
- More weekly sets bring more muscle growth, up to a point. The ACSM's 2026 review points to 10 or more sets per muscle per week.
- Gains get smaller with each extra set, and strength levels off sooner than size.
- Count hard sets only (close to failure). Warm-ups do not count.
- Sets for other muscles count about half: a bench press set is half a set for triceps.
Why weekly sets?
There are many ways to measure how much you train: total weight lifted, number of reps, time in the gym. For muscle growth, the most useful number in the research is hard sets per muscle per week. It is also easy to count.
A hard set is a working set taken close to failure, with only a few reps left in the tank. Warm-up sets do not count.
What the research says
A 2017 meta-analysis found that each extra weekly set was linked to a little more growth, with results pointing to 10 or more weekly sets per muscle for the biggest gains [1]. It had too little data to say what happens far above that.
A much larger 2026 analysis (67 studies, 2,058 people) found the same direction: more sets, more growth and more strength. But the returns get smaller as you add sets, and for strength they flatten out much sooner than for size [2].
The American College of Sports Medicine's 2026 position stand, which pooled 137 systematic reviews, concluded that muscle growth was enhanced by higher volumes, at least 10 sets per muscle per week [3].
Where to start
| You are… | Hard sets per muscle per week | Why |
|---|---|---|
| New to lifting | 6–10 | Anything works at first; leave room to grow |
| Training 6+ months | 10–15 | Around the ACSM's 10-set mark |
| Experienced, recovering well | 15–20+ | Extra sets still help size, with smaller returns |
How to count sets
Most exercises train more than one muscle. A bench press is mostly chest, but the triceps and front shoulders work too. The 2026 analysis tested three ways of counting those indirect sets: as a full set, as nothing, or as half a set. Counting them as half predicted results best [2].
| Exercise (3 sets) | Chest | Triceps | Front shoulders |
|---|---|---|---|
| Barbell Bench Press | 3 | 1.5 | 1.5 |
| Cable Pushdown | 0 | 3 | 0 |
| Week total | 3 | 4.5 | 1.5 |
Spread them over the week
When weekly sets are equal, training a muscle once or several times a week grows it about the same [4]. In practice, 15 sets for one muscle is a lot to do well in one session. Spreading them over two or three days keeps every set high quality. Strength also tends to respond to training more often [2].
Our 3-day split, 4-day split and upper / lower guides all train each major muscle at least twice a week.
Signs you are doing too much
- Your weights or reps drop for two weeks or more.
- You are still sore when the next session for that muscle comes round.
- Sleep, mood or motivation slip.
If that happens, cut your sets by about a third for a week, then build back up more slowly.
FAQ
Is 10 sets per muscle per week enough?
For most people, yes. It is the level the ACSM's 2026 review links with more growth. Experienced lifters may grow a little more with more.
Do warm-up sets count?
No. Only working sets taken close to failure count.
Is more always better?
Up to what you can recover from. Each extra set adds less than the last, and too many sets hurt the quality of the rest.
Sources
- 1Schoenfeld BJ, Ogborn D, Krieger JW. Dose-response relationship between weekly resistance training volume and increases in muscle mass: A systematic review and meta-analysis. Journal of Sports Sciences, 2017; 35(11): 1073–1082. doi.org/10.1080/02640414.2016.1210197
- 2Pelland JC, Remmert JF, Robinson ZP, Hinson SR, Zourdos MC. The Resistance Training Dose Response: Meta-Regressions Exploring the Effects of Weekly Volume and Frequency on Muscle Hypertrophy and Strength Gains. Sports Medicine, 2026; 56(2): 481–505. doi.org/10.1007/s40279-025-02344-w
- 3Currier BS, et al. American College of Sports Medicine Position Stand: Resistance Training Prescription for Muscle Function, Hypertrophy, and Physical Performance in Healthy Adults: An Overview of Reviews. Medicine & Science in Sports & Exercise, 2026; 58(4): 851–872. doi.org/10.1249/MSS.0000000000003897
- 4Schoenfeld BJ, Grgic J, Krieger J. How many times per week should a muscle be trained to maximize muscle hypertrophy? Journal of Sports Sciences, 2019; 37(11): 1286–1295. doi.org/10.1080/02640414.2018.1555906
This article is general information, not medical advice. If you have an injury or a health condition, check with a professional before you start.
