If you're new to lifting weights, resting a bit longer between sets might help your legs grow a little more, but it won't make much difference for your arms or overall muscle mass.

Taking a bit more time to rest between weightlifting sets might help your arms and thighs grow a tiny bit more, but the difference is so small it might not even matter in real life.

Resting more than a minute and a half between sets doesn’t seem to help your muscles grow any more than resting for about a minute — after that, extra rest doesn’t add benefit.

Taking a bit more than a minute between sets when lifting weights might help your arms and legs grow slightly more muscle, but the difference is so small it might not matter much in real life.

Taking a bit more than a minute between sets when lifting weights might help your arms and legs grow slightly bigger, but the difference is so small it might not matter much in real life.

The hypertrophic benefit of longer inter-set rest intervals (>60s) is attenuated or absent in exercises involving smaller muscle groups compared to multi-joint, large-muscle-group movements.