Wish that was a serving each day? Another big, long-term study in Germany this year found that about a square of dark chocolate a day lowered blood pressure and reduced risk of heart attack and stroke by 39 percent. Most of the credit goes to flavonoids, antioxidant compounds that increase the flexibility of veins and arteries.
But since those antioxidants come with a generous portion of sugar, milk, and butter, chowing down on chocolate isn't an excuse to skip your workout. Chocolate and exercise actually work surprisingly well together: Another recent study, out of Australia this time, showed that eating chocolate high in healthy antioxidants reduced the blood pressure-raising effects of exercise on overweight individuals. So go ahead and reward yourself. A chocolate bar has five times the flavonoids of an apple, after all.