Despite this fact, most of the athletes who are concerned with sports nutrition take supplements to boost performance. While vitamin and mineral deficiencies impair physical performance, research indicates that supplementation of a nutritionally adequate sports diet does not improve physical work capacity, endurance, oxygen consumption, cardiovascular function, muscle strength, or resistance to fatigue. From these bits of information, we are informed that the basic diet of early Greeks and Romans for instance was a perfect combination of plant and animal products. They ate several variety of cereals, vegetables, fruits (fresh and dried), and lots of wine (usually diluted with water in varying degree). Athletes can get vitamin D from sunlight. But because of the harmful effects of ultraviolet rays found in sunlight, the only available time for athletes to sunbathe and get vitamin D is during the early mornings till 9 am only. After that, physicians don't advise athletes to expose themselves from the harmful rays of sunlight. Nutraceutical Industry and Sports Nutrition The role of food in total health care is not something new to mankind. The use of food to maintain man's health is as natural as day and night. More than 2,000 years ago, Hippocrates, considered as the father of medicine, said, "Let food be your medicine and medicine be your food. Sports Nutrition Supplements: Vitamins and Minerals Some people think that sports nutrition supplements such as vitamins or minerals help enhance their performance in the field. According to many experts, however, extra intakes of vitamins and minerals don't add up to improvement in performance, unless of course the athlete is suffering from vitamin or mineral deficiencies. While it is true that drinking enough water and eating a balanced diet is enough for the regular guy, sports people you included need additional nourishment, for the efficient production of energy and fuel. Your rigorous training must be accompanied by the right amount of sports nutrition protein. This will help you maximize your athletic talents and in the process gain more power, strength, and endurance as you train.