The reason is that drinking more hot water can accelerate the metabolism of the body, promote the virus out of the body as soon as possible, so that the disease can be recovered faster, and drinking more hot water can supplement the symptoms of dehydration caused by fever. Cold is mainly a viral infection, so in addition to drinking more hot water, it is also recommended to take oral anti-viral Chinese medicine, or Chinese medicine to clear the heat and detoxify the body, such as Four Seasons Anti-Viral Oral Liquid and Pudilan Oral Liquid, which can effectively relieve the symptoms and shorten the course of the disease. During the period of cold, you should pay attention to rest, eat lightly and avoid spicy and stimulating food.