At night. Sun advised Amy that there were sea salt and wormwood in the hot compress bag, and through the physical radiation of natural sea salt, the acupuncture points above the human body surface were heated to achieve the effect of warm moxibustion. Sun suggested Amy apply it properly at night. Physical therapy is very good for many diseases, but too much hot compress will get angry. You can drink a small amount of ginger soup before hot compress, which can help the body to excrete toxins. Before moisturizing, you can also massage the affected area. It is suggested that the massage time should not exceed 15 minutes and the hot compress time should not exceed 40 minutes. Generally, hot compress is better before going to bed. You can relax and fall asleep directly after hot compress, which can get twice the result with half the effort. Hot compress once a day is enough.