People spend about 1/3 of their lives in sleep. When people are in the sleep state, it allows people’s brain and body to get rest. When the body is in the recumbent position during sleep, the liver can enjoy more blood pouring, plus the body is in a resting state, the liver’s burden is the lightest, so high-quality sleep is effective in protecting the liver. Conversely, poor sleep quality, especially sleep disorders, can easily involve the liver function. Medical experts have noted that a sleep disorder called sleep apnea syndrome can cause liver damage. Sleep apnea syndrome, is a brief cessation of breathing during sleep caused by the narrowing of the linguopharynx and the uvula blocking the airway, and in severe cases the apnea can last for more than a minute and a half. Medical data show that about 32% of people with severe sleep apnea have liver function abnormalities, and liver function damage is directly proportional to the severity of apnea. Further studies have found that this liver damage is associated with sleep apnea-induced hypoxia and insulin resistance. It is not difficult to understand that to improve the quality of sleep, the first item is to actively treat sleep disorders such as insomnia and sleep apnea syndrome. Secondly, do not engage in too much brain-draining work in the evening, and do not stay up late. Some people are blamed for their bad liver, often staying up late with late sleep. Chinese medicine believes that there are two hours in a day when human sleep is most important, one is the noon hour (11 a.m. to 1 p.m.), one is the son hour (11 p.m. to 1 a.m.), these four hours is also the time of bone marrow hematopoiesis, the most blood flowing through the liver, which is conducive to liver function repair. In other words, you need to grasp the nap and night sleep, especially night sleep, it is best to go to bed before 10 pm and ensure that you sleep well around 11 pm to pave the way for the repair of liver function.