2. When soaking feet, if the water temperature is too low, the effect of soaking feet will not be achieved. If it is too high, it will easily lead to excessive expansion of blood vessels in both feet, which will make a lot of blood flow to the lower limbs, resulting in insufficient blood supply to important organs such as heart, brain and kidney. In addition, if the water temperature is too high, it is easy to destroy the sebum film on the skin surface of the foot, making the foot easy to dry or even chapped.
3, soaking water level: the water level is best located at a position four fingers wide above the ankle. There is a point called Sanyinjiao (the intersection of liver, spleen and kidney, which is often pressed by liver, spleen and kidney, which is good for health). Soak in this position.
4, foot bath time: generally recommended 15-20 minutes is good, just soak until it is slightly hot. The average person's heat is mainly supplied to the brain and chest, and the temperature of limbs is low. After soaking feet 15-20 minutes, the blood will be very uniform all over the body, which is the most comfortable time. If soaked for a long time, it will lead to a lot of blood concentration in the legs.