Have you ever felt a "runner's high," that relaxing, happy feeling after a bout of exercise? Research shows that it could be an effective treatment for some types of anxiety.

Exercise can help your body become stronger, faster and more resilient. And a fitter body might mean a fitter mind as people age.

While physical activity is generally good for the body, vigorous sports activity can be risky for untrained people. The risks for women may be pretty rare, at least where the heart's concerned.

Lifting weights may not sound like a typical activity for preteens. But perhaps it's something that more schools or communities may want to consider offering older children.

With all the weight loss supplements, advice books, and fad diets out there, it's hard to know what weight loss advice is based on facts. A recent article looked at several medical studies to see what works the best.

Qigong is an ancient Chinese practice that combines slow movement, controlled breathing and concentration. People of any age can practice Qigong. A small study recently looked to see if the practice could help with fatigue.

Exercising is good for your overall health; it may even improve mental health. And recent research suggests that exercise could benefit multiple sclerosis (MS) patients with depression.

For older adults, recovering from a fall could take months or even years depending on its severity. Some exercise programs are designed to prevent falls and the potentially serious injuries that could result from them.

The benefits of high-impact exercise, like running, swimming and biking, is well documented. Recent research suggests that less active non-exercise activities may provide significant health benefits as well.

Kids grow — they become stronger, faster and taller. But for child athletes who grow with their sport and become more focused on that one sport, their chances of getting injured may go up.