Early exercise is not as early as possible. Many people choose to do early exercise before dawn or dusk, thinking that the environment is quiet and the air is fresh. Actually, it is not. Because of the cooling effect of the air near the ground at night, it is easy to form a stable inversion layer, which makes it difficult for pollutants in the air to spread, so the concentration of pollutants in the air is relatively high at this time. Therefore, people who exercise early do not need to join in this "excitement". The correct way is to choose after sunrise, because at that time the inversion layer is destroyed and pollutants spread outward, which is a good time for morning exercise. Supplement:
Every time you do anaerobic exercise, remember not to do it every day. Every time you do anaerobic exercise, you should destroy your muscle tissue as much as possible, and then use enough time and nutrition to repair the damaged muscle tissue. To put it bluntly, muscles grow out at rest after anaerobic exercise. Scientific fitness will naturally have perfect muscles.
Aerobic exercise will be very comfortable, and anaerobic exercise will be very tired.