Enough weekly work.
What matters most is total weekly work: the number of hard sets you do for each muscle. A meta-analysis of the dose-response found that more weekly volume produced more muscle growth.1 The 2026 ACSM position stand says the same: hypertrophy is enhanced by higher volumes.2 So the first thing I check in a plan that isn’t working is how many real sets each muscle gets in a week. (How many sets per week.)
