Researchers at the University of Wisconsin found that sleep can promote the repair of brain cells. In addition, in 20 14, a study included in the website of the American Public Library of Science showed that sleeping at night and during the day can also consolidate people's memory. Napping also has the function of resting and restoring the brain, improving people's memory and helping people remember complex concepts. Sarah Mednick of the University of California and her colleagues published a study in 2008, which showed that taking a nap during the day generally improved memory ability, while caffeine intake did not help memory, and even made it worse.

2、

Promote the secretion of tears and effectively "nourish" the eyes.

When you close your eyes and fall asleep, the ciliary muscles of your eyes can rest after a hard morning's work, which effectively prevents the decline of your vision. Not only that, the lacrimal gland, which is inhibited during the day, also begins to secrete a lot of tears, nourishing the eyes that are dry due to long-term work; With the increase of corneal temperature, cell metabolism will accelerate. Shi Ming reminded that if you can't take a nap every day, you can also have a rest with your eyes closed.

3、

Repair the body's immune function and enhance physical fitness.

Professor Berry Darby, an immunologist at the University of Florida, led a research team to conduct a series of studies on the relationship between sleep, hypnosis and human immunity. The results showed that after hypnotic intervention, the levels of T lymphocytes and B lymphocytes in blood increased significantly. During sleep, the immune system can be repaired to a certain extent, thus regulating sleep. Sleep experts at the German Institute of Psychiatry found that noon 1 is the obvious sleep peak during the day. A short sleep at this time can effectively stimulate lymphocytes in the body and enhance the activity of immune cells.

4. Promote cell renewal and repair skin.

The metabolism of the skin is most active during sleep. Because when you are asleep, the consumption of muscles and internal organs is reduced, the blood vessels in the skin are completely opened, and the blood can fully reach the skin to provide nutrition, self-repair and cell renewal. Shi Ming said that this is one of the reasons why the whole person looks refreshed after a high-quality nap.

5、

Repair oxidative damage and delay aging.

An article on the American Nature website points out that another possible function of sleep is to resist oxidation and provide the body with the repair of oxidative damage. Experiments have proved that sleep-deprived animals will show more obvious oxidative damage. This may be because during sleep, many protein begin to be synthesized, including some protein needed for antioxidation. Napping helps to supplement the lack of sleep at night and plays a certain role in promoting repair.