In the process of extreme muscle contraction, some muscle fibers are broken, triggering the establishment of new collagen chains and the production of new muscle fibers produced with enlarged and thickened myofibrils.
At the same time, the intense muscle contraction greatly increases the energy demand of muscle cells, releases more adrenaline, prompts the rapid decomposition of a large number of fat cells, and generates a large amount of ATP energy for muscle contraction exercise, thereby burning and reducing fat and improving the basal metabolic rate.