少女有一个丰满的胸部是女性特有的美。然而,有些女孩子在乳房开始发育后,产生了一种少女的羞涩,走起路来不再好意思昂首挺胸,而是收胸缩腰,尽量不使突出的胸部显露出来。这样,不仅有损于形体的健美,还会影响脊柱、胸廊和胸部肌肉、内脏器官的 Girls have a plump chest is the unique beauty of women. However, some girls in the beginning of breast development, resulting in a shy girl, walked along the way not to be too proud to stand up, but to close the chest, try not to highlight the prominent chest. In this way, not only detrimental to bodybuilding, but also affect the spine, chest gallery and chest muscles, visceral organs