Foot bath health knowledge 1, the best duration is 20-30 minutes. The foot bath time should not be too long, but 20-30 minutes is appropriate. Soaking feet for less than 20 minutes does not play a health care role, but soaking feet for too long is not suitable for long-term expansion of blood vessels, and the skin of feet is easy to be soaked for too long. 2. The optimum water temperature is 40℃. The water temperature should not be too high. Many people think that the higher the water temperature, the better as long as it is within their tolerance, but it is not. The optimum water temperature for soaking feet is about 40℃, which is slightly higher than human body temperature. Feel the water temperature with your feet instead of your hands. If the water temperature is too high, the blood vessels on the feet will easily expand excessively, and the blood in the body will flow more to the lower limbs, which will easily lead to insufficient blood supply to important organs such as the heart, brain and kidney, which is not good for the body. 3. The amount of water should not be too small. Soaking feet is not the same as washing feet. The water level should be higher, preferably not to the knees. It can play a role in acupuncture points of feet and legs. 4. Wooden basin is the best choice for bathtub materials. Compared with other materials, the wooden basin dissipates heat slowly and is suitable for soaking feet for a long time. Ordinary plastic pots or iron pots are easy to cool after ten minutes. Furthermore, some kinds of wood, such as camphor wood and pine wood, are warm and helpful to improve the effect of soaking feet. 5. Pay attention to the hygiene and cleanliness in the soaking bucket. If the foot bath tub is not thoroughly cleaned or the tub wall is not treated with anti-bacteria, the bacteria on the feet can easily remain in the tub wall, causing repeated foot infections, so it is very important to choose a good foot bath tub. 6, women do not use Chinese medicine to soak their feet during menstruation. The problem of women's menstrual period is more complicated. If you can't find the reason, soaking your feet with traditional Chinese medicine can not only relieve it, but also aggravate the symptoms such as dysmenorrhea. Therefore, if women want to treat menstrual health problems such as dysmenorrhea by soaking their feet with traditional Chinese medicine, it is best to consult a doctor and prescribe medicine according to their own situation.