Muscle growth is commonly known as the enlargement and growth of muscle cells, and unless the force is very small muscle contraction exercise, moderate amount of muscle contraction exercise as well as heavy muscle contraction exercise will produce partial rupture of muscle cells. Once the muscle cell rupture phenomenon occurs, the volume of the cell will use the body’s energy as well as protein to make the cell gradually larger during the cell recovery process. This phenomenon will allow the muscle to maintain a certain level of strength and endurance, and the constant powerful muscle contraction movement will cause the muscle cells to continuously rupture, regenerate, expand and grow. If the body meets the energy as well as material needs of the muscle cells at this time, it will make the muscles grow and the shape of the muscles become stronger and stronger.