About 50 percent of women report some pain or discomfort in their breasts during exercise. This varies considerably in intensity and may depend on what they are wearing. In an Australian study, three women (aged 17–21, cup sizes B and C) were photographed exercising bare breasted, wearing two different bra models, and while wearing a specific sports bra. As expected, breast motion was reduced by bras, and the sports bra was the most effective. The women reported less discomfort with bras and especially with the sports bra. However, not all sports bras are created equally and a woman should be properly fitted.