Because of the level of physical effort and intensity of certain sports, weight training and fitness programs, these sport or activity require higher levels of energy and fluids. Eating a variety of foods in the diet ensures that the required level of carbohydrates, minerals vitamins and protein are consumed to sustain the activity throughout its sporting period. Guidelines would dictate that the recommended nutritional daily intake be no more than 60% of calories come from carbs, 30% from fat and 15% from protein.