The materials below were designed by the Collegiate and Professional Sports Dietitians Association (CPSDA). These are trustworthy materials for sports nutrition information, but have been designed for college athletes. If you are under age 18, consult your parent, coach, and doctor before making any dietary changes. In general, growing adolescent athletes need a higher energy (calorie) intake to balance their growth, development, and extremely active lifestyle. Under-fueling can negatively impact growth and athletic performance, but consuming unhealthy foods, poorly timed meals, or just too many calories can also have negative consequences.