Muscle hypertrophy through resistance training followed by rest leads to changes in muscle fibers and innervating nerves, enabling new capabilities without repeated damage.

“if you overload muscles properly through resistance training of any kind and then give them a period of rest there's recruitment of specific things to the muscle fibers as well as recruitment of changes in the nerves that innervate that control the contraction of those muscles and then those muscles grow they get stronger Etc and they're able to function and use that new strength and new growth and you don't have to damage those muscle fibers or trigger those adaptations over and over again to maintain them because you have this new capability”