So when you find a feat that makes you fit, don't quit. Stick with it. Of course, everyone on the planet has known about the benefits of exercise for years and years. Here's a glimpse of how we shape-up these days. Working out with free weights has become the most popular fitness activity.
Females lead the way in the fitness movement.
Walking is voted the most favorite activity. 32 million fitness walkers say so. A new polymer which can be introduced into a joint using minimally invasive techniques may one day provide relief for millions of people with osteoarthritis, according to the American College of Rheumatology. In osteoarthritis, cartilage that covers the ends of the bones in the joint breaks down, preventing smooth movement in the joint. The disease can become so painful that the only treatment is joint replacement, a costly and time-consuming procedure.