The correct way to stretch ligaments is static stretching, dynamic stretching and popping vibration stretching, such as stretching using body posture or with the help of implements. 1. Static stretching. It is the stretching of the human body in a sitting or standing position. This kind of stretching amplitude is relatively small, slow and continuous, generally not more than a minute, the action is gentle and should not produce tensor reflex, so this is safer, suitable for the elderly. It is suitable for static stretching after exercise. 2. Dynamic stretching. Dynamic stretching is a functional stretching exercises, specific methods can be used with the help of tools, such as foam shafts or elastic bands for stretching, mainly used for athletes, the use of specialized movements for the body to prepare for training before doing sports stretching. 3. Bouncy stretching. Bouncy stretching is also done with the help of tools, such as dumbbells or pulleys. Including the muscle force process, but this stretching is easy to damage the muscles and connective tissue, is not applicable to often do not exercise or have old injuries. Stretching methods need to be based on their own situation to choose a more suitable method, if there is discomfort, stop in time.