Girls can get breast enhancement through exercise. The principle is to pad muscle groups directly under the breast and fat layer, which can play a similar role in filling silica gel, and the shape is better, which can reach the level of almost no sagging without underwear. At the same time, exercise can stimulate breast development, and a diet with high protein, tropical fruits and trace estrogen will be more helpful. However, the position of the muscles that girls need to practice must be very accurate, because the surface area of the pectoral muscles is larger than that of the chest, so the pectoral muscles that are practiced outside the chest are completely destroyed.