The harm of lactic acid accumulation is mainly divided into two aspects: causing muscle soreness and lactic acidosis, of which lactic acidosis is relatively uncommon. 1, muscle soreness: lactic acid is the intermediate product of glucose metabolism in the body during intense exercise, a small amount of lactic acid buildup will not cause harm to the human body and can be completely metabolized and absorbed with the help of blood circulation. But if the intensity of exercise is relatively too large, the amount of lactic acid buildup is too much to be metabolized through normal blood circulation, it will accumulate in the body, squeezing the blood vessels, impeding the normal flow of blood, muscle soreness, pain and other symptoms; 2, lactic acidosis: too much lactic acid buildup may also appear lactic acidosis, manifested as hypotension, hyperventilation, followed by impaired consciousness, drowsiness, nausea, vomiting, palpitations, and even coma in severe cases. In severe cases, coma may even occur. Therefore, after exercise, you should choose a suitable way to promote lactic acid excretion, because lactic acid is soluble in water, for lactic acid accumulation can be relieved by drinking hot water, while you can eat pears, bananas and other alkaline fruits, can also help regulate lactic acid. You can also do some slow aerobic exercise the day after exercise, and then hot compresses and massage to help break down the body’s accumulation of lactic acid, and excretion, can also play a role in relieving discomfort.