It is not suicide, but health maintenance. It can promote blood circulation in the feet, reduce local muscle tension, eliminate fatigue and improve sleep. "Washing your feet with hot water is better than taking tonics." Soaking your feet for 15 minutes a day can play a health care role. If you immerse your feet in hot water of about 40 degrees Celsius, the headache will be significantly relieved after about 15 to 20 minutes. This is because the blood vessels in the feet dilate and blood flows from the head to the feet, which can relatively reduce cerebral congestion and relieve headaches. For headaches caused by colds and fever, foot soaking in hot water can also help reduce fever. If you can continuously massage the Yongquan point with your hands and press the Taichong point on the instep behind the big toe while soaking your feet, it will also help lower blood pressure. Moreover, regular hot water foot soaking and foot therapy can be used in a wide range of applications, including rheumatism, spleen and stomach diseases, insomnia, headaches, colds and other systemic diseases, paraplegia, brain trauma, stroke, lumbar disc herniation, kidney disease, diabetes and other serious diseases. Post-rehabilitation treatment, etc. are included.