, "It depends on the adequacy of the diet, the calorie intake, individual nutritional needs etc. Many endurance athletes consume a large amount of calories to meet their metabolic and training needs. A higher calorie intake will often provide more
. The body needs vitamins in tiny amounts but it needs them regularly. Vitamins do not have any calories, and therefore provide no energy. However, they are vital to the energy-producing process, and a deficiency in vitamins in this chain will result
