There is a folk proverb in our country: "Thirty-six plans are the best policy, and you won't lose your teeth until you get old." Old tooth explained everything. According to documents, Tao Hongjing, a doctor in Liang Wudi, was over 80 years old, with firm teeth and good health 1400 years ago. His main fitness method is percussion. He believes that "teeth are bones and muscles", and knocking on teeth will make him strong and refreshed. In the Ming Dynasty, there was a long-lived man named Leng Qian, who lived 150 years old. His longevity experience is: "wake up every morning and knock your teeth 36 times." It is said that Su Dongpo, a great poet in the Song Dynasty, also had the habit of tapping his teeth to keep fit. He once said: After midnight, he put on his coat and sat cross-legged and knocked his teeth thirty-six times, and he would feel refreshed. Emperor Qianlong was the emperor who reigned for the longest time and lived the longest in Qing Dynasty. One of the secrets of his longevity was "knocking his teeth frequently". Therefore, teeth are not only chewing organs, but also closely related to human health.

It is generally believed that toothache is not a disease, but the World Health Organization lists dental caries and periodontal diseases that cause toothache as one of the three major chronic non-communicable diseases in the world, and oral health is a big problem related to the health level of all mankind. Modern medicine has confirmed that oral diseases can cause many diseases, such as heart disease and stomach disease, which are all related to periodontitis.

From the understanding of modern medicine on the study of tooth function, knocking teeth can give full play to the physiological stimulation brought by chewing. Frequent tapping can promote the blood circulation of gums, gums and teeth, improve the nutrition of these tissues, make teeth more firm and shiny, maintain and enhance the functions of masseter muscles and important bases of teeth, maintain a certain volume fullness, and alleviate the concave face and flat ribs caused by physical atrophy of the elderly to some extent. Patients who already have dental diseases can also have a good auxiliary treatment effect by knocking their teeth frequently.

There are three main methods of tapping teeth, namely tapping, tapping again and tapping alternately. Generally speaking, good teeth should be knocked hard, and bad teeth should be knocked gently and alternately. When you knock your teeth, you need to be calm and keep your mouth shut naturally. Knock your teeth 36 times, knock your teeth 36 times, knock your wrong teeth 36 times, and lick your teeth 5 times on Wednesday. It only takes two minutes a day to get the effect of strengthening the body. Of course, the method of knocking teeth thirty-six times in the morning mentioned by the ancients can be done at any time in application, and the number of times need not be limited to thirty-six, the more the better.

Pu Qianguan, a health care practitioner in the Song Dynasty, also believed that knocking teeth when urinating was beneficial to excretory function, so knocking teeth at that time would divert attention, reduce the tension of urethra and anal sphincter, and make its function more natural and smooth. In addition, there is another tooth tightening method, that is, when urinating, close your eyes and hold your breath, and the upper and lower teeth tightly bite. This is also called "closing the door", which can tighten the teeth and help the urine to be discharged smoothly.

Great changes have taken place in the structure of modern food, which makes the chewing function of teeth relatively weakened, so it is more practical to knock teeth frequently. In developed countries in Europe and America, dentists are the most sought-after occupations, where people have clean and healthy teeth. When China people went abroad, ugly and dirty teeth, bad breath and dental diseases became a major symbol. Therefore, while popularizing dental health care treatment, we should often beat our teeth and do a good job in self-care of our teeth.