Eating on time is also an important aspect of healthy diet. Sun Simiao emphasized that seasonal meals have two meanings: First, for the human body, climate changes in four seasons, such as spring temperature, summer heat, autumn dryness and winter cold, will have an important impact on human physiological activities. Therefore, in the process of diet regimen, we should make corresponding adjustments to the diet according to the changes of seasonal climate. Otherwise, it will be harmful to health and even cause diseases.

Therefore, Sun Simiao said, "The five internal organs are the main fate of life. Those with five internal organs are the five elements, with five elements inside and five flavors outside. Five elements and five flavors are more suitable for restraint, and don't overdo it in spring, summer, autumn and winter. Those who eat and drink in the five internal organs are ill, and those who live together have nothing else. As the saying goes, spring is not spicy, summer is not salty, late summer is not sour, autumn is not bitter, and winter is not sweet. You can eat nothing, but be careful. As the saying goes, all diseases come from the mouth. The cover is not empty. Don't eat too much when you are dizzy at four o'clock, you will get sick. People avoid eating fat from the solstice in summer to the vernal equinox in autumn. However, people who like cold food in hot months are even fatter. They also eat fruits and vegetables without festivals, so they sleep in cold water and bathe in cold water. The five flavors are more like thieves. Although they want to get sick, they can't get it. "

Secondly, as far as food is concerned, many foods have their best eating seasons, such as "eating leeks in February and March is beneficial to people"; "Leopard meat, acid, temperature, non-toxic. Nourishing the kidney, strengthening the five internal organs, repairing the injury, and strengthening the qi of the wise. Eating for a long time benefits people. "