We can dynamically stretch the body muscles to improve the flexibility of joints, and then do a group of jumps or jogs 10 minutes to improve the blood circulation of the body, let the body warm up slowly and find the state of exercise. Arrange aerobic exercise for people who gain muscle, it is recommended to train for 30 minutes at a time and arrange aerobic exercise 2-3 times a week. For people who lose weight, it is recommended to train for 40-60 minutes each time and arrange aerobic exercise 4-6 times a week. When choosing aerobic exercise, we should start with low-intensity exercise (walking, jogging, cycling, mountain climbing, etc.). ), and then gradually increase the intensity of exercise with the improvement of physical endurance.