What are the actions of physical education class's warm-up exercise in junior high school?

Stretching exercise, chest expansion exercise, kicking exercise, body side exercise, body rotation exercise, whole body exercise, jumping exercise and finishing exercise.

Stretching exercise is a kind of health care exercise. It helps to dredge lymph glands and relax joints, enhance the flexibility of the body, relax muscles, reduce sports injuries and fatigue, and if massage is added, it can also enhance blood metabolism. Stretching is not as easy to get hurt as equipment training.

The eighth set of broadcast gymnastics is compiled on the basis of soliciting opinions from all sides and absorbing the advantages of the previous sets of broadcast gymnastics, which is scientific, basic, simple, universal and universal. The eighth set of broadcast gymnastics was officially launched on 1997, which is different from the seventh set of design concepts that hope to compete with other sports. The eighth set of action design is simple and clear, and the designer hopes that anyone can learn it and will not be in a hurry because the action is too difficult.

On August 9th at 20 10, Radio Beijing will resume broadcasting gymnastics music with the frequency of FM 102.5. Organs, enterprises and institutions will carry out the eighth set of broadcast gymnastics, when employees can free themselves from the intense work and adjust their body and mind.