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Make a move.

By doing absolutely nothing (physical, that is), you nearly double your odds of getting felled by a heart attack, according to the Mayo Clinic Heart Book. A little exercise goes a long way in keeping your heart muscle fit and in controlling weight, cholesterol, blood pressure and stress. "Just walking at a three-mph pace for 30 minutes most days of the week can reduce one's risk by one third," says Briller. "And there's some data that shows that three ten-minute sessions do just as well." (Call 800-242-8721 or visit www.americanheart.org to find out about the American Heart Walk program.)