This is normal, because during exercise, anaerobic respiration in muscles is greater than aerobic respiration, resulting in a large amount of lactic acid accumulated in muscles, so muscles will be sore. But after you exercise, the water produced by aerobic breathing will be broken down into oxygen for aerobic breathing. Excessive lactic acid will inhibit aerobic breathing the next day, making it weak, and then you will feel muscle pain, which is why it will start to hurt every other day. When lactic acid is almost consumed, it won't hurt.

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Matters needing attention

Warm-up activities before exercise should not be less to prevent sports injuries; After exercise, you must do relaxation exercises to ensure that you can recover your physical fatigue as soon as possible and improve your exercise level. Exercise will gradually enhance the functions of the heart, lungs and other organs, increase vital capacity, have a strong heartbeat, have sufficient blood supply and be strong. Good health is your greatest capital in your work and life.

Don't eat within 50 minutes before and after exercise, you can add some water appropriately, keep the indoor temperature at about 20 degrees, and don't have strong winds blowing directly to the practitioners. Indoor light is suitable, neither too bright nor too dark. To reduce the difficulty for the first time, the heart rate should be controlled at 60- 100 beats/min. If allowed, people with chronic physical diseases should be accompanied by private teachers or family members. Women with no exercise history and menstrual dysmenorrhea should not practice. It is best to take a bath after a 30-minute break, especially in summer, which is easy to get heatstroke.

References:

Sports _ Baidu Encyclopedia