Sports nutrition is the foundation of athletic success. It is a well-designed nutrition plan that allows active adults and athletes to perform at their best. It supplies the right food type, energy, nutrients, and fluids to keep the body well hydrated and functioning at peak levels. Sports nutrition diet may vary day to day, depending on specific energy demands and health products required. The energy required for living and physical activity comes from the food we eat and fluid intake. Macronutrients in the following food groups supply the energy essential to optimal body function. Carbohydrates Carbohydrates are either simple or complex, and the most important energy source for the human body. Simple carbs include sugars naturally occurring in foods like fruits, vegetables, and milk. Proteins Proteins are made up of a chain of amino acids and are essential to every cell of the human body. Protein can either be complete or incomplete. Complete proteins conta...