30 active minutes: a simple way to avoid health problems
Regular exercise promotes good health because it reduces the risk of heart attacks and helps prevent diseases such as hypertension, obesity, osteoporosis and depression. But how long should we exercise and how often? And how should our workouts be structured? The American College of Sports Medicine and the American Heart Association have answered these questions with a study involving men and women between the ages of 18 and 65. The…