After fitness, such as arm soreness, usually caused by the following reasons: First, when exerting too much or not fully warmed up, fitness will hurt the bone, fascia, ligaments and other joints, resulting in joint tears and joint trauma, stretching and other situations. Second, excessive rhabdomyolysis after fitness will release a large amount of creatine kinase into the bloodstream, which will also lead to arm pain and soreness. Third, too much anaerobic exercise training will produce a large number of anaerobic glycolysis, at this time will make the rapid release of glycogen and absorption into the body, metabolism of excess lactic acid, when lactic acid in the body to accumulate too much and too much, there will be arm soreness and soreness and so on. At this time there is no need for too much and excessive tension, to the hospital treatment can be relieved after fitness arm soreness.