Full and healthy breasts are an important part of a woman’s proud curves, so adolescent girls should have a correct understanding and do a good job of breast health. First of all, it should be correctly understood that breast development is a necessary path for every woman and is a normal physiological phenomenon. Children should be taught not to be inferior or shy, and not to tightly gird their breasts because of shyness. Secondly, to cultivate good posture, usually stand when you have to stand up, abdomen, tight hips, do not contain the chest hunchback, sleep should take the supine or side lying position, not prone, compression of the breast. Once again, nutrition should be comprehensive, not because of the pursuit of slim and excessive diet or partial diet, moderate intake of fat, which is conducive to increasing the amount of fat in the breasts, to keep the breasts full and round. In addition, appropriate exercise is also very important, can be appropriate to do more such as chest expansion exercises, push-ups and chest aerobics to strengthen the chest muscle exercise, morning and evening appropriate massage breast, through the nerve reflex to improve the secretion of the pituitary gland, to promote breast development. Finally, we must pay attention to the protection of the breasts, because during the process of breast development, sometimes there is a slight swelling and pain or itching, do not squeeze or scratch with your hands. Protect your breasts during labor or sports to avoid injuries due to impact or extrusion. Be cautious with estrogen-containing drugs and health products during adolescence, and use breast enlargement products with caution. Estrogen from animal ovaries in food and some skin care products contain trace amounts of estrogen, but long-term consumption or external use of estrogen in them may also act on the breasts and cause pathological conditions. Use of bras need to pay attention to the problem: In life, many people think that breast augmentation should wear a bra in time, while some people think that they should wait until after the birth of the breast secretion of milk and then wear. In fact, these ideas are not scientific. So, when should you start wearing a bra? At present, it is believed that the speed and size of breast development should be determined. Breast development is influenced by various factors such as genetics, nutrition and exercise. When breasts are fully developed at the beginning of puberty, you should not take the method of binding them to hinder their development. However, if you don’t wear a bra after your breasts are fully developed, it’s also bad for your breast development. Because healthy breasts need special protection, wearing a bra in time is the ideal and easy way. Wearing a bra can protect the breasts, support and support the breasts, so that their blood circulation is smooth, which helps the development of the breasts; can reduce the swing of the breasts when walking, sports and labor, to prevent breast sagging; can promote the accumulation of fat in the breasts, so that the breasts are more plump. It is generally believed that girls grow to 16 to 8 years old, the development of the chest gallery and breast is close to maturity, or use a soft ruler to measure from the upper bottom of the breast through the nipple to the lower bottom of the breast, the upper and lower distance is greater than 400px should wear a bra. If the age is less than 16 years old and the distance between the upper and lower breasts is less than 400px, it is not appropriate to wear a bra. This is because wearing a bra too early is not only bad for the developing and growing breasts, but also affects future milk production. The ideal bra should be able to hold up the breasts when the body is moving, limit the movement of the breasts as much as possible without affecting breathing, and not leave traces of pressure on the skin after removal. Therefore, when buying a bra, you should measure your own bust, that is, use a soft leather ruler to measure along the lower edge of both sides of the breast around the chest a week, this size is the size of the bra should be bought. Bra size should be moderate, if too small, will oppress the breasts and nipples, affecting breathing and the development of the thorax and breasts; while the bra is too large, it will not achieve the role of support and protection of the breasts. In addition, the bra should be removed when sleeping to avoid affecting breathing and blood circulation. Monthly breast self-examination can be done 1-2 weeks after menstruation, as follows: stand in front of a mirror with your hands down or with your arms crossed, and carefully observe whether the bilateral breast is symmetrical in size, whether the skin and nipples are sunken or eczema, and whether there is redness, swelling or abnormal protrusion. Then, with the left hand up or crossed, check the left breast with the right hand, lightly pressing the breast with the belly of the finger, touching for hard lumps, starting from the nipple in a circular clockwise direction, touching with the palm of the hand flat, with the four fingers together, using the end of the index finger, middle finger and ring finger to check the outer upper, outer lower, inner lower and inner upper areas of the breast in order, and finally the nipple and areola area in the center of the breast. The same method is used to examine the right breast. Do not use your fingers to pinch the breast tissue during the examination, otherwise you may mistake the pinched breast tissue for a lump. If you find uneven thickening or lumps, or if there is nipple overflow, you should go to the hospital at an early stage and not delay your condition because of shyness. In addition, the best time to go to the hospital for annual professional testing is one to two weeks after your menstruation.