14/09/2026
More sets, more muscle. More sets, more strength - but not in the same way, and the difference matters if your week is tight.
Adding weekly sets keeps buying muscle size for a long time. Strength is different: the curve bends far harder and far earlier, so the first few hard sets per muscle each week do most of the job, and each one after that adds progressively less.
That comes from pooled data across 67 studies of very different people, lifts and programmes. It is not a number for you, and it settles nothing about what any individual can manage on two sessions a week.
What it means in practice is straightforward enough. If you can only train twice a week, put the sets you have on the lifts that matter, keep the effort honest, and only add volume once you are properly recovering from the sessions already in your week.
Doing less than the internet says is rarely the reason training is not working.
(Pelland et al., Sports Medicine, 2026)