Themost important thing to exercises is safety, and the second is still safety. The reason for our emphasis on safety is that the wrong way to do physical exercises can easily cause injuries. Muscles and bones injuries are not the worst kinds. An articular cartilage that hurts ligament is a real nightmare. Therefore, in its exercise injury prevention "Fresh Start", SPRC discusses various improper ways to do exercises and frequent sports injuries, and designs many operative methods for recovery.