Andrew Huberman· PhD
He said for instance, that for every year after age 40, there's a 1% drop in muscle size that can be offset by resistance training. But that if you don't do resistance training, that you won't offset. And during that series, we also talked about the minimum requirement for 6 and probably more like 10 working sets per muscle group per week in order to at least maintain muscle size, not just age 40 and beyond but even at younger ages.