Brushing your teeth at night is mainly to clean up the residue accumulated in your mouth during the day and avoid bacteria breeding in your mouth to the greatest extent. Studies have shown that oral saliva is secreted during the day to inhibit the process of dental plaque being decomposed into acid by food residues, but at night, people basically stop secreting saliva into the mouth, which is objective and convenient for dental plaque.

Moreover, some studies have found that heart disease is directly related to dental health, and bacteria that cause periodontal disease can also cause heart problems.

2. Drink a glass of water-to prevent blood from being sticky.

When people reach a certain age, the viscosity of blood will also increase.

Because the blood flow rate is slow at night, it is more likely to cause blood viscosity. Therefore, drinking a glass of water before going to bed can dilute the blood viscosity and reduce sudden dangers such as myocardial infarction, angina pectoris and cerebral thrombosis. For diabetics, keeping a certain amount of water is also beneficial to control blood sugar.

3. Comb your hair-soothe your nerves, nourish your heart and help you live longer.

The head is a "smart house", where all the yang will meet and all the veins are connected. And there are more than forty acupoints. Combing your hair often can dredge meridians and promote blood circulation. If you feel tired, combing your hair for a few minutes can effectively relax.

Combing your hair often can enhance friction and finally achieve the effect of dredging veins.