After girls grow up, the company of bras is essential. There are almost 12 hours of intimate contact with bras every day, but many people do not know the harm of female bras. What is the harm of women wearing tight underwear? What underwear should women wear? What harm does tight underwear do to women? 1. Causes insufficient blood supply to the breast If it is suitable, it will cause breast pain. If you use tight underwear for a long time, the compressed part under the breast will cause poor blood supply and fibrosis, forming cord like hypertrophy and compression pain. 2. Threaten spine Underwear that is too small is like wearing a thin iron wire on the skin. When the human body carries out a series of activities, the bra frequently rubs in a very small area of the skin. As time goes on, these muscles will become excessively tired, leading to aging, which makes women vulnerable to cervical spondylosis. 3. Compression of mammary gland Underwear with tight shoulder straps will not only c...