The dose–response curve for is clearer than most people think.
Your goals include building or keeping muscle — weekly volume is the single biggest programming lever.
TL;DR
For each muscle group, doing roughly 10–20 a week produces the most . Below 10 you're leaving gains on the table; above 20 the extra fatigue rarely pays off.
What the study found
Schoenfeld's meta-analysis found a clear dose–response between weekly and . Each additional set added a small increment of hypertrophy up to about 10 sets, with continuing but shallower gains through 20. Warm-ups didn't count.
How to apply it
Count , not total sets. For chest across a week, three sessions with 4 hard sets each is 12 — right in the pocket. Split volume across at least two sessions per muscle for better recovery and slightly better growth.
Caveats
Volume tolerance is individual and rises with training age. Beginners grow well on 8–10 sets. Advanced lifters may need 18–22. Track your soreness, sleep and lifts — those signals matter more than any published number.
Dose-response relationship between weekly resistance training volume and increases in muscle mass
Schoenfeld BJ, Ogborn D, Krieger JW · 2017 · Journal of Sports Sciences
Meta-analysis showing a clear dose-response between weekly sets per muscle and hypertrophy, with meaningful gains across roughly 10–20 sets per week.
Read the full paper