The growth of muscles in various parts is a process of repeatedly stimulating the muscle muscle fiber tear and recovery process, because the intensity of the usual exercise is not enough, the muscle fiber is not torn and reorganized, and the muscle has been maintained. Slowly, the muscles shrink, and in the long run, there will be sarcopenia or muscle atrophy, just like the road will become soft when it is not pressed. So we have to exercise the muscles properly and we have to stimulate and press our muscles through the corresponding training, so that the muscles will be full.
During high-intensity strength training (dumbbells, barbells, etc., or self-weight training such as prisoner’s fitness), our nervous system responds to repeated contractile stimulation of muscle fibers. Under such stimulation, muscle fibers are damaged, torn, reorganized, and enlarged. Burn off a lot of fat. You’re gonna get a nice body