The common belief that eating carbohydrates is "bad" for you isn't necessarily true. Quality sources of carbohydrate like whole-grain breads, fruits, starchy vegetables and legumes provide our bodies with numerous vitamins and minerals. In addition to being our greatest energy source, some carbohydrates (like those listed above) contain fiber, which keep you full longer. Carbohydrates get a bad rap sometimes because they can be found in foods like cookies, chips, sodas and sweets. The Academy of Nutrition and Dietetics recommends that active adults and current athletes consume 6 to 10 grams of carbohydrates per kilogram of body weight per day. As an important part of restoring muscle glycogen after exercise, carbohydrates also maintain blood glucose levels, which may explain feeling shaky or dizzy after not eating for a prolonged period. Choosing nutritious sources of carbohydrates can help improve not only your athletic performance, but your overall health.