Rainy days are much darker than sunny days, and light is an important factor affecting people's sleep quality. Many people can't sleep well when the light is on. On rainy days, there are often some dark clouds blocking the light from the sun. At this time, the body will secrete more melatonin than before, and a large part of people's sleep quality is determined by melatonin, which can help people fall asleep to a great extent, making it easier for people to fall asleep.

There is also a kind of "white noise" on rainy days. The source of this white noise is that rain drops on the ground. Although it is also called noise, it is very different from ordinary noise. Ordinary noise will disturb people's sleep and make people feel restless, while white noise is a kind of noise that is beneficial to human body. It will make people feel comfortable and fall asleep faster, so it is easy for us to fall asleep on rainy days.

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Healthy sleep

First, hunger and satiety.

Eating too much and not sleeping well is not conducive to our spleen and stomach digestion, turning dampness into phlegm, which is very harmful to yang. I can't sleep when I'm hungry. It is difficult for me to sleep because my intestines are empty. Some people eat snacks in bed, which is even more unhealthy.

Second, drink more water.

Don't drink too much water when sleeping, especially cold water. If the water stays moist, nocturia will increase. Too much cold water can also hurt the kidneys.

Third, it is not suitable to hide your face.

Sleeping with your head covered will not only lead to poor breathing, but also inhale a lot of carbon dioxide, which is harmful to your health. Therefore, it is necessary to keep breathing smooth when sleeping. Sun Simiao in the Tang Dynasty said, "If you don't cover your head in winter, you will live a long life", so you can't sleep with your head covered.

Baidu encyclopedia-sleep