In order to reach their optimal potential, an athlete must nourish their body with nutritious foods. Proteins, carbohydrates, fruits and vegetables; These three main food groups fuel a winning athlete. Protein helps build teeth, bones and muscles, and creates enzymes, red blood cells, long-term energy and also strengthens the immune system. Its functions are the most diverse of all food groups. Proteins are made up of combinations of structures called amino acids that combine in various ways to form muscles, bones, and tissues. They also perform other functions, including transporting nutrients and producing enzymes for overall health benefit. Adequate and regular protein intake is essential because the body does not store it easily. Various foods provide protein in different amounts, with the greatest amount coming primarily from animal products such as meat, fish and eggs. I) Athletes need protein, primarily to repair tissues and rebuild muscles damaged during exercise and to optimize carbohydrate storage. . This effect will help athletes immediately gain energy for a competition or training session. II) Protein is extremely important in muscle growth, associated with weight training; Protein can improve muscle mass gain. Depending on the athlete, the balance between strength training and protein intake will vary; a professional or trainer will measure the amount needed. Thinking that all athletes will need a high protein diet, short track sprinters will not consume as much as a football player because the sprinter would have a high carbohydrate diet. This results in instant energy unlike football players' needs for muscle mass and stored energy for long periods of exercise. III) Health is a key factor in the well-being of any person, athletes cannot perform when they are ill. The main health benefits of protein are to strengthen the immune system and replace red blood cells. The higher the immune system, the more significantly the course of the disease decreases. Red blood cells; constantly travel through your body to provide oxygen and remove waste. If this were not the case, the body would slowly die. Whether on a track, field, court or ice rink, nutrition is vitally important in the development of a healthy, competitive athlete. Athletes must rely on highly nutritious, vitamin-rich foods to keep their bodies healthy and their minds focused to maximize performance..