Cold noodles are washing your face with cold water. Cold water refers to water with a water temperature of about 20℃. Under normal circumstances, the tap water from the faucet is basically cold water at around 20℃, which can be directly used to wash your face. Traditional medicine believes that the six yang meridians of the human body are all connected in the head and face, so it is called "the head is the meeting of all yang" and "the wisdom house". Modern medicine believes that the brain in the skull is the center of the human neuroendocrine system and plays a role in regulating and managing various systems and organs of the whole body. Therefore, washing your face with cold water is beneficial from both Chinese and western medicine.
Washing your face with cold water can refresh your mind and make people more awake. Especially washing your face with cold water in the morning has a strong exciting effect on the brain, which can quickly drive away fatigue and cheer up the spirit. Washing your face with cold water can also promote the blood circulation of your face and enhance your body's disease resistance. Because the stimulation of cold water can make the blood vessels of the face and nasal cavity contract, and after the stimulation of cold water, the blood vessels expand and relax reflexively, which not only promotes the blood circulation of the face, improves the nutritional supply of facial tissues, but also enhances the elasticity of facial blood vessels and skin, so it can not only prevent diseases, but also has a certain cosmetic effect.
Warm teeth means brushing your teeth and rinsing your mouth with warm water. Warm water refers to water with a temperature of about 35℃. We know that the temperature in human mouth is constant, and only when the temperature of teeth and gums is around 35℃ can normal metabolism be carried out. If you don't pay attention to the water temperature when brushing your teeth or gargling, you will often give sudden stimulation to your teeth and gums, which may lead to various diseases of your teeth and gums and shorten your tooth life. On the contrary, brushing your teeth with cold water for a long time will lead to gingival atrophy and loose teeth. We all know that the life span of teeth is shorter than that of human body, but we don't know that the root cause lies in the habit of "brushing your teeth with cold water".
Hot feet means soaking and washing feet with hot water before going to bed every night. Hot water refers to water with a water temperature of 45℃ ~ 50℃. Traditionally, the foot is the intersection of yang meridian and yin meridian, and there are many acupoints, which play an important role in the whole body's qi and blood operation. From modern medicine, the foot is the end of the limb, which is in the lowest position of the human body, farthest from the heart and has poor blood circulation. The application of hot water to soak and wash feet can promote the circulation of qi and blood in the human body from the perspective of traditional Chinese medicine, and has the functions of relaxing muscles and tendons and nourishing the internal organs; From the point of view of western medicine, it can promote the whole body blood circulation, so as to enhance the physiological functions of various organs of the body and restore fatigue.