Modern research has found that strong light can stimulate people's brains and easily lead to brain excitement. At the same time, it will stimulate people's retina, cause nerve impulses, induce abnormal brain activity, and make people unable to sleep. If a person sleeps in bright light for three days in a row, there will be nervous system disorder, which may even cause mental disorder in the long run.
Chinese medicine believes that you should "hang curtains on the bedroom door" when you sleep, that is, hang dark curtains that can block light when you sleep, and turn off the lights to sleep at the same time.
Too bright bedroom lights will also affect people's sleep quality. The bedroom is a private place, and the lighting should be soft, which can make the bedroom warm and comfortable and improve the quality of sleep. Too bright light will affect sleep.
What needs special attention is that the light can't be directed at the bedside, because direct light will make people fidgety and difficult to sleep; Secondly, it is not suitable to choose neon lights with large flicker as decoration, which is easy to cause impetuous psychology and reduce sleep quality.
Extended data
The harm of poor quality sleep
March 2 1 day is World Sleep Day. World Sleep Day is a global activity initiated by the International Foundation for Mental Health and Neuroscience on 200 1. March 2 1 is designated as World Sleep Day every year. Its focus is to arouse people's attention to the importance and quality of sleep.
With the accelerated pace of people's life, lack of sleep has become a common phenomenon among urbanites today. Experts remind that lack of sleep is very harmful to health and should not be taken lightly. The harm of insufficient sleep is mainly reflected in the following aspects:
1. Affect the creative thinking of the brain
Researchers believe that a person's brain must have enough sleep to think clearly and be responsive. If the brain does not get enough rest for a long time, it will affect its creative thinking and ability to deal with things.
2. Affect the growth and development of teenagers.
The growth and development of teenagers is related to the secretion of growth hormone in addition to genetic, nutritional and sports factors. Growth hormone is a hormone secreted by hypothalamus, which can promote the development of bones, muscles and organs.
Because the secretion of growth hormone is closely related to sleep, that is, there is a big secretion peak after people fall asleep, and then there are several small secretion peaks, while in the non-sleep state, the secretion of growth hormone decreases. Therefore, teenagers should develop well, grow tall and get enough sleep.
3. Affect skin health
The reason why human skin is soft and shiny is that it relies on the capillaries of subcutaneous tissue to provide sufficient nutrition. Lack of sleep will cause blood stasis in skin capillaries, and the circulation will be blocked, so that skin cells can't get enough nutrition, which will affect skin metabolism, accelerate skin aging and make skin look dull. Especially the eyes are black and prone to wrinkles.
4. cause disease.
Frequent lack of sleep can make people feel anxious and reduce their immunity, which can lead to various diseases, such as neurasthenia, colds, gastrointestinal diseases and so on. Lack of sleep can also lead to an increase in blood cholesterol, thus increasing the risk of heart disease.
Cell division in the human body is mostly carried out during sleep. Lack of sleep or sleep disorder will affect the normal division of cells, which may lead to mutation of cancer cells and cancer.
Generally speaking, people of different ages, middle school students need to sleep 8-9 hours a day, and adults need to sleep 7-8 hours.
5. Lack of sleep can lead to obesity.
Related research shows that lack of sleep will lead to the decrease of apolipoprotein concentration in human body. Lipoprotein is an active substance in the blood system, which can suppress appetite and influence the brain to decide whether to eat or not.
Lack of sleep can also cause an increase in the concentration of appetite hormones in the human body. Appetite hormone is a substance secreted by the stomach, which can cause people's desire to eat. When these departments in charge of appetite conflict with each other, the decision-making system of the brain may make wrong decisions.
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