Whatever sports you enjoy--cycling, running, in-line skating, hiking, swimming--you know that eating right can help you stay fit. Whether you're running a marathon or just a few laps around the park, a high-carbohydrate and low-fat diet gives you the energy you need. What better way to eat right than a vegetarian diet, fortified with electrolytes, antioxidants, beta-carotene, and phytochemicals? Just ask Carl Lewis, nine-time Olympic gold medalist,...