Daily foot soak is a certain benefit, China has an old saying: “hot water to wash the feet, better than eating tonic. If you soak your feet for more than 15 minutes a day, you can play the role of health care. If you dip your feet into the hot water at about 40 ℃ for about 15-20 minutes each time, the headache will be significantly relieved. This is because the blood vessels in the feet dilate and blood flows from the head to the feet, which can relatively reduce brain congestion, thus relieving headaches. As opposed to diseases caused by colds, fever, and headaches, hot water foot soaks also help to reduce fever. However, cardiovascular and cerebrovascular patients should not use high temperature water temperature. Because too high a temperature, will stimulate the nerves and capillaries over-expansion, accelerating blood flow, a short time can increase the burden on the heart, the burden on the blood vessels.