In clinical work, we found that many patients with breast pain are caused by wearing inappropriate bras, how should we choose the right pair of bras? Let’s borrow an article from the Internet to explain. The weight of a breast ranges from 150 to 500 grams, with an average of about 250 grams. With such heavy breasts attached to the muscles of the chest, the soft breasts can easily face the fate of sagging if they are only supported by the skin. The bra has the function of fixing both sides of the lower bust and lifting upwards, so choosing the right bra can fix the high point of the breast in the right position and create a three-dimensional breast curve. Underwear, you can also choose to wear or not to wear! The twelve secrets of selecting a bra 1, whether the cups are fixed in the lower part of the chest, will not move arbitrarily. 2.If you choose a bra with a steel ring can not have the following two conditions; one is that it will be painful, and the second is that there is a cup indentation of the bra under the chest circumference. 3, adjust the appropriate length of the straps. 4, whether the breast has been concentrated above the cup inside. 5.The nipple should be located at the top of the cup. 6, whether the bra cleavage at the obedience. 7.The flesh under the armpit should not be exposed. 8.Check whether the upper edge of the cup is snug. 9.Check whether the cups can fully support the chest. 10.Notice if the cups are crepey because they do not fit. 11.Even if the straps are removed, the bra is still fixed and will not move. 12.Finally turn your arms back and forth to check if there is any pressure on your breasts and if your nipples are being squeezed. Women wearing too small and too tight bra will cause compression of the muscles at the chest outlet, causing narrowing of the chest outlet, resulting in compression of the nerves or blood vessels that extend from the spinal cord and the thorax to the arms, and then symptoms such as soreness, pain and strain in the arms, medically known as “chest outlet narrowing syndrome”. Once diagnosed, the light condition can be treated with medication, physical therapy and other methods, if the symptoms are heavy, there are certain muscle spasm, fibrosis and other symptoms, often require surgery. In addition, too small bra will also have an impact on the heart and lung function, mainly manifested as poor breathing. Doctors warned that often wear too small bra will also affect the development of bones and breasts