Sports bras are available with so many different features that it's easier than ever to find exactly the right bra for your activity level, whether low, medium or high impact. Styles like pullover, racerbacks, front close, seamless and more are meant to support your breasts and reduce breast bounce, which is both painful and damaging to breast tissue. One of the most common methods to reduce bounce is compression. Compression sports bras work a little like an Ace bandage; they hold breasts in place by pressing them against the chest. While they don't provide maximum shaping, they do their job extremely well, especially for women with smaller breasts.