Being physically active is one of the most important steps that Americans of all ages can take to improve their health. The benefits of physical activity occur in generally healthy people, in people at risk of developing chronic diseases, and in people with current chronic conditions or disabilities. Studies have examined the role of physical activity in many groups—men and women, children, teens, adults, older adults, people with disabilities, and women during pregnancy and the postpartum period. These studies have focused on the role that physical activity plays in many health outcomes.
Thumbnail: Photographic reflections of Australian swimmer Daniel Bell in action during Day 03 of the 2000 Sydney Paralympic Games. (CC BY-SA 3.0; Australian Paralympic Committee/Australian Sports Commission).