Avoid bread, pasta, bagels, and other high-carb foods. Carbohydrates are the fuel for your muscles. Your body uses up your carbohydrates, and if there are no carbohydrates to replete them, your body basically has no energy source. Athletes who participate in athletic events over several days often start lagging toward the end. They'll have much less endurance, and eventually it affects their performance.
Supplements can replace a balanced diet.
That said, he notes that research continually indicates potential health benefits of vitamins and other supplements. He encourages FPs to keep an open mind and read the literature, but always warn patients against taking huge doses of any vitamin. When in training Eat, eat, eat. Dr. Kimmel warns that he's seen many patients who became ill after using products purchased at health food stores. He describes an outbreak at a local high school, where students were having shortness of breath, chest pains, and trouble concentrating.