Most lifters grow on about 10 to 20 hard sets per muscle group per week. Ten is a sensible floor if you're new to structured training or coming back after a break; the top half of that range is where experienced lifters tend to end up after adding volume gradually over months, not weeks. Split those sets across at least two sessions rather than one, count only sets taken close to failure, and count them per muscle rather than per exercise — one bench press set counts toward chest, front delts, and triceps.
Last updated: September 2026
The unit of measurement changed
For decades the answer to "how much should I do" was phrased per workout: three sets of ten, five by five, four exercises a session. That framing is still everywhere, and what nobody tells you when you're handed a three-sets-of-ten program is that it hides the number which actually tracks with growth.
The shift — and it does change how you write a program — is that training volume is now counted per muscle, per week. Not per exercise. Not per session. A chest day of 16 sets and two chest days of 8 sets are the same weekly dose; how you split them is a recovery and quality question, not a volume question. Once you count this way, most "my program stopped working" problems collapse into one of two things: not enough weekly sets, or too many low-quality ones.
If you're rebuilding your week around this, best workout split for building muscle covers how the sessions get arranged once you know the weekly totals.
What counts as a hard set
A hard set is a working set taken close to failure — roughly one to three reps in reserve, meaning you could have managed one to three more before form fell apart. Warm-ups don't count. Neither do back-off sets you cruise through.
This is where set counts get quietly inflated. Twenty logged sets where half of them were comfortable is not twenty hard sets, and that gap is usually the explanation when someone's volume looks high on paper and their progress doesn't match it.
Partial credit is reasonable for secondary muscles. Being precise about it, a set of rows counts fully for back and roughly half for biceps. If that feels like overhead, count direct work fully and ignore the indirect — you'll be close enough. How consistently you count matters more than which counting rule you pick.
A starting range, muscle by muscle
Rough weekly hard-set targets for someone training to build muscle:
- Chest, back, quads, hamstrings, shoulders: 10–20 sets
- Biceps, triceps, calves: 8–16 sets, much of it arriving through compound work
- Glutes: 8–16 sets, though squat and hinge patterns already cover a lot of this
- Abs: 6–12 sets
Start at the bottom of your range. Add two or three sets per muscle every few weeks, and only while you're recovering well and still progressing. The volume you can recover from is the volume that works, and that ceiling is personal — it moves with sleep, stress, calories, and training age.
Spread it over at least two sessions
Hitting a muscle twice a week beats hitting it once for the same weekly total, mostly because set quality drops as a session drags on. Sets 13 through 18 of a marathon chest day are rarely as good as sets 1 through 6.
Two sessions per muscle per week is the practical default. Three works for smaller muscles or lower per-session volumes. One is workable if it's all your schedule allows — it's just the least efficient version of the same total.
More is not automatically better
Volume has a ceiling, and past it you accumulate fatigue without accumulating growth. The signs are recognizable: strength drifting down on your main lifts, sleep getting worse, sessions you dread walking into, joints complaining before muscles do.
The fix is usually to cut sets rather than add recovery tools. Drop to the lower end of your range for a week or two and let performance come back up. Exercise choice matters here too — sets on movements you can feel and load progressively are worth more than sets on movements you're grinding through. Best exercises for each muscle group is a reasonable place to audit that.
Programming volume across a roster
If you're writing sessions for a class rather than for yourself, weekly per-muscle volume is the number that keeps a varied program honest. Class programming drifts toward whatever is fun to coach, and a month of drift can leave hamstrings and horizontal pulling badly under-served while everyone's shoulders take a beating.
Two practices that hold up in a group setting:
Audit the week, not the day. Tally the weekly per-muscle sets your programming actually delivers to a member attending three or four classes. The gap between intended and delivered is usually wider than expected.
Give the high-volume members somewhere to go. Members who want more than class provides will add it themselves, unsupervised and uncounted. Structured personal training is where that extra volume gets accounted for instead of quietly stacking on top of the class total.
Tracking it without a spreadsheet
Counting sets by hand works right up until about week three. AllStrong logs workouts in natural language — say or type "incline dumbbell press, 3 sets of 8 at 60s" and the app matches it to muscle groups, records sets, reps, and weight, and detects personal records automatically across strength, cardio, bodyweight, and hold exercises. Workout logging and PR tracking are on the free tier.
The free Data Trends Dashboard charts your nutrition, sleep, and wellness numbers, but it doesn't currently break workout volume down by muscle group — for that, the weekly tally above is still your best tool. If you'd rather have AI build the structure than count sets by hand, Premium adds multi-week workout programs with periodization built around your equipment and experience level.
The short version
Ten to twenty hard sets per muscle per week, split over two or more sessions, counted honestly at close to failure, added slowly, and pulled back when performance stalls.
The numbers matter less than the accounting. Most people struggle to add size not because you're doing the wrong exercises, but because nobody ever tallies the week — that's why a plateau feels mysterious when it's usually just arithmetic.
Frequently Asked Questions
How many sets per muscle group per week should I do?
Ten to twenty hard sets per muscle group per week suits most people training for muscle growth. If you're new to structured training or returning after a layoff, start near ten. Add two or three sets every few weeks, and only while you're recovering well and still progressing. Count only sets taken within a few reps of failure.
Is 10 sets per week enough to build muscle?
For most people, yes — ten hard sets per muscle per week is enough to make progress, particularly in the first year or two of structured training. Treat it as a floor rather than a ceiling. If you're recovering well and progress has stalled for several weeks, gradually adding sets is a reasonable next move before changing anything else.
Do sets from compound exercises count toward every muscle they work?
Yes, with some judgement. A bench press set counts fully toward chest and partially toward front delts and triceps; a row counts fully for back and roughly half for biceps. If fractions feel fussy, count direct work only and stay consistent about it — consistency in how you count matters more than the fractions themselves.
How many sets per session is too many for one muscle?
Set quality tends to fall away after roughly ten hard sets for a single muscle in one session, which is why splitting weekly volume across two or three sessions usually works better than one long one. If your last few sets are noticeably weaker than your first few, you've found the practical ceiling for that day.