Previous editions have sold over 500,000 copies. Contains new analysis on trendy diets like South Beach, Ultra Slim Fast, anti-aging, and thermogenics. Features numerous updates on vitamins, supplements, energy drinks, organic foods, pro-biotics, and the role of carbohydrate during exercise. Includes the new food pyramid, revised guidelines from the American Heart Association, and new information on hydration and fluid intake. Content is accessible, applicable, and relevant to a large audience of athletes and active people.