Keeping hands clean and hygienic has the functions of promoting local blood circulation, strengthening hands and beautifying hands; The second is disease prevention, which is the main link of "disease from mouth to mouth". As the saying goes: "Wash your hands before and after meals, and it is difficult for bacteria and viruses to enter." Using soap or soap when washing hands can not only remove dirt, but also sterilize. But don't use gasoline to clean the grease on your hands, because gasoline will corrode your skin and make your hands rough, which may easily cause some skin diseases. For heating in winter, the ancients advocated using a water heater or soaking hands with hot water instead of drying. Lao Lao Heng Yan said: "We often bake our hands with fire in winter, and our fingers will be cracked", which deserves our attention in life. In addition, you should always cut your nails. "Health Book" said: "A is a tendon, and it is irreplaceable if you don't count the tendons." Regular manicure can eliminate bacteria, strengthen metabolism, promote the renewal of muscles and qi, which is conducive to the glory of fingers and the strength of fascia.