The direction of the head of the bed determines the body temperature during sleep. Light is the key

Sleep is a spontaneous behavior of the human body in response to the laws of nature. It allows the brain and body to rest, recuperate and recover. Of course, in pursuit of high-quality sleep, people have also tried their best to conform to the laws of nature. Some netizens pointed out that people’s beds should not face due west. This is because if the head faces due west, then the sleeping position will be opposite to the direction of the earth’s rotation from west to east, which will cause discomfort to the human body in the long run. Netizens also said that this principle is like riding in a car. If people face the opposite direction of the car, their bodies will feel tired more easily, and the effect will be more obvious for people who suffer from motion sickness. This statement seems to make sense, but is it really true?

Some people have proposed the theory of bedside orientation, but there is currently no scientific theory to prove it.

In fact, people have endless opinions on the direction of the head of the bed. Some people think that the head of the bed should not face due west, because this will cause the direction of human body movement to be opposite to the direction of the earth's rotation, causing discomfort to the body. There are also claims that when sleeping, the human body should face the head to the north and the feet to the south. This position is consistent with the direction of the earth's magnetic field. This sleeping method that conforms to the direction of the earth's magnetic field can reduce the impact of the geomagnetic field on the human body, thereby helping people maintain a good sleep. In addition, Chinese medicine also holds that the human body should follow the "four seasons health preservation", that is, change the sleeping direction with the alternation of the four seasons: spring east, summer south, long summer, autumn west, and winter north.

There are many opinions about the direction of the head of the bed, so which one is the most reliable? Experts say that some scholars have indeed proposed the theory of the orientation of the head of the bed, but so far this theory has not been confirmed by scientific theory. In fact, the impact of the direction of the head of the bed on human sleep is not as exaggerated as netizens say. If you want to improve the quality of sleep, you should start by improving the sleeping conditions. Grasping the two key points of sleeping light and sleeping temperature is the prerequisite for having a good sleep.

Control the light and temperature for sleeping and enjoy high-quality sleep easily

Modern people have many activities before going to bed, but they don’t realize that some of these activities invisibly affect their sleep quality. Studies have found that the increase in the number of people with sleep disorders is related to the use of tablet computers such as iPads, because the short-wave light radiation caused by these self-luminous display devices is close to the peak sensitivity of melatonin suppression.

The experiment asked 13 volunteers around 20 years old to use iPad for 2 hours before going to bed. As a result, their melatonin levels were suppressed by 23%; the study also measured the results after using iPad for 1 hour but found no significant changes in the data. Melatonin is a hormone that controls the human body clock and promotes sleep. A decrease in melatonin will directly cause the body to remain awake during sleep and make it difficult to fall asleep. Experiments have confirmed that the screens of devices such as iPads emit blue light, which is similar to sunlight and inhibits the brain's secretion of melatonin, thus adversely affecting the quality of human sleep.

In this regard, experts point out that exposure to electronic products before going to bed may be a major reason for delayed sleep among contemporary teenagers and adults. He recommends that everyone try to avoid exposure to blue light devices before going to bed, so that the body can enjoy healthy sleep without being disturbed by light. Especially for insomnia patients, avoiding exposure to blue light before going to bed is of great significance to improving their sleep quality.

In addition, experts point out that the temperature before going to bed also has a certain impact on human sleep. According to normal rules, the human body's temperature begins to drop around 9 p.m. and reaches its lowest point between 2 and 4 a.m. This is a change in the human body's adaptation to nature and is also a normal manifestation of the human body entering a sleep state.

An experiment conducted in the UK measured the intestinal temperature of the subjects at 36°C at 23:00. The subjects were then asked to take a shower and the intestinal temperature was measured again at 38°C. At this time, the subjects were asked to prepare for bed. The results showed that after the subjects' body temperature increased, it took them longer to fall asleep and they experienced mild insomnia. It took 1 hour for the subjects' body temperature to drop from 38°C to 36°C. This experiment shows that temperature is very important for the human body to fall asleep. Only when the human body temperature adapts to natural changes can people fall asleep peacefully. Experts recommend that people try not to exercise before going to bed, especially people should not take a bath within 1 hour before going to bed to keep their body temperature within the normal range.

In fact, if people want to have a high-quality sleep, instead of worrying about the direction of the head of the bed, it is better to start from the nature of sleep. If you can follow the laws of nature, keep a good mood, go to bed on time, get enough sleep, do not do strenuous exercise or eat before going to bed, and try to provide yourself with a comfortable and quiet natural environment, you will naturally be able to have a high-quality sleep.