Up. Down. Sideways. When you move during exercise, so do your breasts. Again and again and again. This repetitive bouncing can stress, stretch and irreversibly damage the cooper’s ligaments – the connective tissue that holds up and maintains the shape of your breasts. And damage here can cause your breasts to sag and droop. By properly supporting your breasts during exercise, the panache sports bra dramatically reduces movement in all directions. Keeping your breast in great shape.