The Amateur Athletic Union (AAU) Strength Sports has partnered with The National Center for Drug Free Sports to offer all AAU athletes, coaches and parents the use of a program that can be used as an educational tool to provide research information on substances used to enhance performance that may be banned.

Training on an empty stomach? Your "motor" is guaranteed to run out of gas in the middle of a tough workout, because you haven't "fueled up" enough. A small pre-exercise meal is mandatory to provide energy for intense physical activity, whether it's weight training before school, practice in the afternoon, or a game in the evening. However, before starting your "engine," review these "road signs" to safely guide yourself through a successful workout:

NFL QB Tim Tebow completes an off-season workout at D1-Savannah with national director of training Kurt Hester. Tebow performs a metabolic conditioning circuit followed by weight room exercises that target the lower and upper body.

Premier NFL middle linebacker Patrick Willis of the San Francisco 49ers offers a taste of his "homegrown" workout during the off-season.

Chicago Blackhawks team nutritionist Julie Burns shares hydration advice.