The mammary glands will not become bigger through massage, mammary gland development will appear in two periods, other times and will not be affected by the outside world of drugs, food, massage to appear bigger. During puberty, the mammary glands are affected by the increase in the level of estrogen in the body, it will gradually develop and increase in size, you need to pay attention to a reasonable combination of nutritious diet, to ensure adequate sleep, appropriate exercise exercise, can play a role in promoting the development of the organism. At the end of puberty, mammary gland development reaches its peak, and the second mammary gland development is influenced by the increase of estrogen and progesterone levels in the body after pregnancy, and the mammary gland will develop and enlarge again, so as to prepare for breastfeeding in the later stage. After the breastfeeding period is over, it will return to normal and this breast development is not permanent. Massage and stroking will not cause the breast tissue to develop and enlarge, and excessive massage therapy is not recommended.