Jane Ross, a 42-year-old Boston area gym buff, is honest about it: When exercising, she sometimes grunts.

Doing stretching and aerobic workouts in warm water may help relieve pain and improve daily function in people with knee or hip osteoarthritis.

Millions of gym buffs do it regularly, but stretching before or after exercise will not prevent muscle soreness, a new study contends.

About 60 percent of the protection provided to women by exercise against heart disease and stroke comes from its effect on a few specific risk factors, says a U.S. study in the journal Circulation .

Obese kids who develop hypertension may be watching far too much television, a new study suggests.