Mild lactic acid buildup can be quickly metabolized by the body and is generally not serious. If there is a large amount of lactic acid buildup in the body, it may cause muscle soreness and lactic acidosis, which is more serious. The main cause of lactic acid buildup is the formation of lactic acid as a result of relatively excessive exercise, which exceeds the intensity of aerobic exercise and leads to anaerobic metabolism of the body’s energy production. Lactic acid is located in the body will cause localized muscle soreness. Generally produces a lactic acid buildup. 1. Mild lactic acid buildup is generally asymptomatic, or there are symptoms such as muscle soreness and pain, which can be completely metabolized and absorbed with the help of blood circulation. 2. In severe lactic acid buildup, the patient will develop lactic acidosis, which is clinically manifested by decreased appetite, nausea, vomiting, muscle pain, deepened and accelerated respiration due to hyperventilation, followed by impaired consciousness, dizziness, and drowsiness. Severe lactic acid buildup will result in a drop in blood pressure and body temperature, accelerated heartbeat, blurred consciousness, and even shock and coma. It is recommended to seek immediate medical attention when lactic acid buildup occurs and symptoms are not relieved to avoid delays.