(2) You should choose a flat and open area with fresh air to exercise, so as to provide enough oxygen for the human body. Because the basic way of fitness is to breathe in a lot of fresh air from the outside during exercise, choosing the environment is an important preparation before exercise.
(3) Before exercise, you should do some preparatory work, such as stretching your arms and expanding your chest, twisting your waist and turning around, bending your knees and leg press, and running slowly. Only in this way can we relax our limbs after exercise. To do a good job of breathing regulation, stop drinking a lot of water and taking a shower with cold water in a short time.
Persistence is the key to physical exercise. "Three days to fish, two days to dry the net" is wasted.