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This article was written by:
Sun Jianhua, Hebei The Deputy Chief Physician of the Department of Psychiatry of the Provincial Mental Health Center
is good at treating various mental diseases such as depression, anxiety, sleep disorders, etc., and visits the clinic every Monday and Wednesday.
Dr. Sun Jianhua
In my life, when it rains, I listen out the window The pattering rain made me want to sleep inexplicably. Why do you like to sleep on rainy days?
1. One of the reasons is the low oxygen content in the air on rainy days.
In cloudy and rainy days, due to insufficient sunlight and insufficient photosynthesis of plants, the oxygen content in the air is low.
At the same time, when it rains, there is more water vapor in the air, resulting in lower air pressure and lower oxygen content. At this time, the brain will automatically make protective adjustments due to insufficient oxygen, and the sympathetic nerve excitability will decrease, resulting in sleepiness.
2. On rainy days, the light is dark and the secretion of melatonin is high.
On cloudy and rainy days, the environment becomes dim due to the dark clouds blocking the sun, and a special substance in the human body, melatonin, will be secreted more than usual.
Melatonin is a neurotransmitter that shortens the time it takes to fall asleep and promotes sleep. Melatonin is synthesized by the pineal gland in the human body, and its secretion has a distinct circadian rhythm, with inhibited secretion during the day and active secretion at night.
On a rainy day, the sky is dark, and the light time is insufficient, and melatonin will be secreted correspondingly, and it is not surprising that people are prone to sleepiness.
3. The sound of rain can help you sleep.
From the perspective of human living environment factors, the ticking of raindrops belongs to “white noise”, which has the effect of promoting sleep. Noise is loud and harsh, preventing people from resting normally, while white noise is evenly distributed and more “pleasant” sound.
The raindrops fall on the eaves, windows or leaves, and when the sound repeats the same decibel, the same melody and rhythm, it is easy to hypnotize the consciousness of the human body.
Experiments have shown that relatively soothing, regular white noise can make people feel calmer and easier to fall asleep. Therefore, it is easy to fall asleep listening to the sound of rain when it rains.
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This article comes from: 2022-07-19 Health Times “Why do you like to sleep on rainy days? 》
Editor of this article: Ren Xuan Reviewing director: Yang Xiaoming