Foot bath is foot bath, which belongs to one of the contents of pedicure in traditional Chinese medicine and is also a commonly used external treatment. Soaking your feet with hot water can not only relieve fatigue, but also help you sleep. At the same time, adding traditional Chinese medicine to water can also play other roles. The foot has been considered as the second heart of the human body since ancient times. According to the health theory, the feet are farthest from the human heart and bear the heaviest burden. So this place is most likely to cause poor blood circulation. According to medical records, "a man with feet is still like a tree with roots. The roots are exhausted first, and the old feet are old first." Especially for people who often feel cold hands and feet, soaking feet with hot water is an excellent method.