1. Ancient people often had the habit of taking a walk after dinner. As the saying goes, walking after a meal will live to ninety-nine, which shows how important it is to people's health.

Ancient people often did not eat hot food in winter, nor did they eat too cold food in hot summer.

Ancient people often had the habit of drinking tea. Tea is a traditional culture in China. Drinking tea not only has some health-preserving effects, but also scholars often cultivate their self-cultivation through drinking tea.

4. Ancient people often achieved the function of keeping in good health by doing some physical activities and maintaining a good mood.