The purpose of warm-up is to make the body feel warm, enter the state of exercise, and avoid injury during exercise.

Generally, the warm-up time should not exceed 20 minutes, preferably not less than 10 minutes. Don't accelerate at first to prevent sports injury. After 2 minutes, it will enter a fast-paced state, mainly feeling that the heart rate is accelerating. "Finally, you can do a short sprint and raise your heart rate to the fastest you can bear in 30-60 seconds (you can choose to do this step or not)." After the sprint, you will have a fast-paced walk for 30-60 seconds to make a transition.