What are the warm-up exercises in physical education class?

Many friends like to do sports, but they don't know much about sports. What many people want to know is, what are the warm-up exercises in physical education class? In fact, the main warm-up exercises are head exercise, shoulder exercise, chest exercise, turning exercise, abdominal back exercise, lunge leg press exercise, abdominal exercise, knee joint exercise, wrist joint exercise and ankle joint exercise. There are many different teaching methods for the specific operation of these sports, but their corresponding points are all the same, all of which are aimed at activating the muscles and joints of the body with a light amount of activity, so as to prevent the human body from being damaged in the next large number of sports, thus affecting the health of the body.