Here are some stretching exercises developed by the American Academy of Orthopaedic Surgeons that young athletes can perform before participating in any athletic activity. Athletes must do each one of the exercises carefully, speed is not important. Once the exercise routine is learned, the entire program should take no longer than 10 minutes. It also important to warm up before doing any of these exercises. Good examples of warm up activities include slowly running in place and walking for a few minutes.
Place forearms on inside of knees and push knees to the ground.
Lean forward, bringing chin to feet. Hold for five seconds. Repeat three to six times. Bring chin to knee, keeping the leg straight. Hold for five seconds.