Much of the literature concerning health benefits of physical activity is based on studies done primarily with men. Only recently have large-scale studies been initiated to investigate the effects of physical activity on women’s health and wellness. Chris Wells, the author of this paper, has been a pioneer in the study of physical activity for women. As you will see, much more research studying girls and women is necessary, but much has been accomplished in recent years. Diseases often thought to be “diseases of men” affect women as well as men. The evidence now suggests there are many health benefits for females.