First, the medical basis: massage stimulation, through the mammary nerve – brain negative feedback regulation of the physiological balance of estrogen, massage at least can prevent and control nipple inversion, mammary hyperplasia, in the developmental stage of the beginning of massage, but also prevent nipple inversion, mammary ducts clogging, to promote healthy development of the mammary glands, to prevent breast dysplasia has a very good help. Second, breast aerobics steps: 1, with the thumb and forefinger pinch the root of the nipple, pull the nipple outward to prevent nipple inversion, mammary ducts clogging, each side of the 20 to 40 times after times. For mild or moderate nipple inversion, first pull out the nipple and then press the above method, increase the number of times of pulling. 2, with the thumb on one side, the other four fingers together for one side, tiger mouth open, from both sides of the chest to the center of the push, in order to prevent chest expansion, 20 ~ 40 times per side. 3, with the thumb on one side, the other four fingers together as one side, tiger mouth open, hand keep the same shape, starting from the left chest. Left hand from the outside of the left breast to the center of the push to the center at the same time with the right hand from the bottom of the left breast to push the left breast upward, to be pushed all the way to the collarbone. Stagger the two hands to push the left breast. Repeat 20 to 40 times and then switch to the right breast. It can prevent breast sagging. 4: Make your hands into a cup, separate your fingers, grab your breasts and lift them from the base of the breasts towards the nipple. Repeat 20-40 times. 5, hands on top of the areola, around the breast for spiral massage, repeat each side 20 to 40 times.