Physiologically speaking, muscle soreness is caused by lactic acid produced by incomplete blood sugar metabolism, which may be caused by anaerobic respiration, or it may be caused by sudden heavy load exercise of muscles after a long period of strenuous exercise, which hinders muscle energy supply, so that lactic acid produced during exercise does not stimulate nerves quickly, but accumulates in muscle fibers and acts for a long time, so that the pain will not subside for a long time after exercise.
If you don't exercise for a long time, your muscles will ache. You should insist on it every day. It hurts a little at first, but it won't hurt after a long time. That means the effect of exercise is coming! Also, the load you have just started exercising is too heavy, which may lead to muscle strain. In short, moderate exercise and persistence are the last word! ! !