Guide
How many sets per muscle group per week?
Weekly sets per muscle is the most-used way to describe training volume, because it is the one number that survives comparison between different programs. This page covers what it measures, roughly where the useful range sits, and — the part most articles skip — how to count it from a log you have actually kept.
The short answer
Most hypertrophy research and the coaching practice built on it points at roughly 10 to 20 hard sets per muscle group per week as the band where the majority of trainees get most of the growth available to them. More than that keeps adding a little for some people; well under it is usually where a lagging body part is hiding.
Treat that band as a starting point, not a prescription. The studies behind it are short, run on small groups, and average across people who recover very differently. Your training age, sleep, calories, exercise selection and how close you take sets to failure all move the number.
What counts as a set
A hard set — a working set taken somewhere near failure, usually within a few reps of it. Warm-ups don't count. Neither do the sets you cut short because the gym was closing.
The harder question is which muscle a set belongs to. A barbell row trains the back, but it also loads the biceps and rear delts. There are two defensible ways to handle that:
- Direct sets only — the row counts for back, full stop. Simple, and it undercounts arms.
- Direct plus indirect — the row counts for back and biceps. Closer to what the tissue experiences, and the totals stop adding up to your session set count.
Neither is wrong; they answer different questions. What matters is that you use one of them consistently, because switching between them makes a program look like it changed when it didn't.
Counting it from your log
By hand: take a normal week, list every working set, tag each one with the muscle it trains, and total the tags. Do it for two or three weeks — one week is not a program, it is a week.
The tedious part is that the answer changes every week and you have to redo it. Hevy Analyzer does the counting for any public Hevy profile: a six-panel chart plots weekly sets for chest, back, shoulders, arms, legs and core, so a muscle that quietly dropped off is visible as a trend rather than as a number you have to recompute.
It counts the direct plus indirect way, using the muscles Hevy attaches to each exercise. A set is counted once for every muscle group it trains, so the six panels add up to more than your raw weekly set count. That is expected — the two numbers are not meant to divide into each other.
If the number is low
The usual fix is not a new program. In order of how often it turns out to be the actual cause:
- Missed sessions. Four planned days at two-thirds attendance is a low-volume program no matter what the spreadsheet says.
- A muscle that only appears as an afterthought. Rear delts, hamstrings and calves are the classics — three sets at the end of a session, when there is time.
- Sets that aren't hard sets. Volume you log but leave five reps in reserve on counts on paper and not much else.
Add sets to the lagging muscle first, a few per week, and hold everything else steady long enough to see whether it did anything. If the added volume stops producing, that is a different problem — telling a plateau from noise has its own page.