Sports bra, also known as sports bra, is a category classified according to "the specific function of bra". Therefore, as the name implies, sports bra is to prevent women's breasts from being hurt in sports and fitness. A study by Dr. Scurr of the University of Portsmouth in the United Kingdom shows that the average person runs 1 mile, and the breast shakes 1.35 meters. The violent swing of a woman's chest may damage the elastic fibrous tissue (deep fascia &; Amp fibrous membrane, also known as Cooper's ligament), causes permanent damage to it, leading to sagging and deformation of the chest.