Exercise boosts the number of progenitor cells in people with heart failure, and those cells in turn repair and rebuild weakened muscle and blood vessels, researchers report.

A 10-step plan to help you reduce body stress and prevent back pain, especially during the demanding holiday season, is outlined by the U.S. National Athletic Trainers' Association.

Exercise may seem best at preventing illness rather than treating it, but a new study suggests that low-impact physical activity could make an immediate difference for people with one tough-to-treat condition: fibromyalgia.

People who start a walking program for their health get more out of it by using a pedometer, a device that counts their steps, a new study shows.

A study aimed at understanding the health of female astronauts finds that even short, intense exercise sessions can help women on bed rest recuperate more quickly.