The good thing about male gua sha is that it can regulate qi and blood, activate blood circulation, etc. The bad thing is that for some of the inappropriate people, gua sha may aggravate the condition. 1. Benefits: male gua sha can stimulate the corresponding parts of the body surface, can regulate qi line blood, blood, but also able to Shu Jian Tongluo, can significantly reduce the pain symptoms, is conducive to the recovery of the condition. Gua Sha often treats exogenous diseases (such as coughs, colds, etc.) and bone and joint muscle pain (such as frozen shoulder, lumbar muscle strain, cervical spondylosis, etc.). 2. bad: for leukemia, allergic purpura, serious cardiovascular and cerebrovascular disease, kidney disease edema patients, if the Gua Sha may cause subcutaneous congestion, increase the burden on the heart, lungs, liver, kidneys, and even lead to aggravate the condition. Therefore, if men need to carry out gua sha, should be carried out under the guidance of a professional doctor, do not operate on your own to avoid the risk.