The time it takes for lactic acid buildup to disappear is related to individual differences and is not the same for everyone. Generally most people will fade away in 2~3 days, and some people will delay it to 5~6 days or even about 1 week. Lactic acid buildup is a result of long-term inactivity, and after a sudden intense exercise or heavy exercise, lactic acid buildup occurs due to anaerobic fermentation in the muscles as a result of increased muscle oxygen demand. Lactic acid buildup can lead to muscle pain, usually the pain lasts for 2~3 days, some people have large amount of lactic acid buildup or the body’s transit capacity is limited, the pain will be delayed to 5~6 days, or even 1 week or so. It is recommended to warm up before exercise, massage and stretching can be taken, warm water shower and massage after exercise can regulate blood circulation and accelerate lactic acid metabolism. If the accumulation of lactic acid is more serious lactic acidosis, manifested by low blood pressure, hyperventilation it is best to go to the nearest hospital in time.