Meridian sleep is one of the ancient sleep regimen, that is, you have to fall asleep at noon and noon every day. Midnight is the meeting of Yin and Yang, which is called "closing Yin". It's the heaviest time of the day, when yin dominates quietness, and you should sleep in the middle of the night.

Sleep before midnight (23 ~ 1 point) at night, and enter the best sleep state at midnight, which can nourish yin and have the best sleep effect.

Just take a nap at noon (11~13) for 30 minutes to1hour. Modern research has also found that the functions of various organs of human body drop to the minimum at 0 ~ 4 o'clock at night, and the sympathetic nerves of human body are most tired at noon 12 ~ 1 point, so the sleep quality at noon and noon is the best, which conforms to the law of yin and yang of heaven and earth. Relevant statistics show that sleeping at noon for the elderly can reduce the incidence of cardiovascular and cerebrovascular diseases, which is of great significance for disease prevention and health care.