Sleep time should generally be kept at 7 to 8 hours, but it is not necessary to force it, but it varies from person to person. Those who fall asleep quickly and deeply generally have no dreams or fewer dreams, and they can fully recover their energy after sleeping for 6 hours; People who fall asleep slowly and shallowly, have a lot of sleep eyes and often have nightmares still don't feel refreshed even after sleeping for 10 hours. They should get effective sleep through various treatments, but prolonging sleep time is harmful to their health. Because everyone's physiological rhythm is different, the arrangement of going to bed in the morning and evening also varies from person to person! In fact, different circadian rhythms cause two kinds of sleeping situations, namely "night owl" and "lark". Conforming to this physiological rhythm is conducive to improving work efficiency and quality of life, and vice versa.
According to the medical theory of the motherland, it is advisable to go to bed late and get up early in spring and summer, and sleep for 5 ~ 7 hours every day; It is advisable to go to bed early and get up early in autumn, and sleep for 7-8 hours every day; It is advisable to go to bed early and get up late in winter, and you need to sleep for 8 ~ 9 hours every day. Follow the laws of natural growth and collection.
Sunny and hot days, short sleep time; Bad weather, such as rainy days, low temperature in winter and long sleep time. With the increase of regional altitude, the sleep time decreases slightly; With the increase of latitude, the sleep time is slightly prolonged.