Curled up in the mother's body like a fetus, because in this posture, not only all muscles are relaxed, but also the brain is fully relaxed. This is why people try to squat when they are tired, because this is the posture closest to the fetus.

The reason why the fetus insists on this posture is because the cerebral cortex was not fully developed at that time and did not have enough ability to control the muscles, so the muscles naturally adopted the most relaxed initial posture. If you can go back to sleep and stick to this initial state, it is actually to ensure that your brain can relax in an abundant "off-duty" state. The best quality sleep is like a baby's sleep, with a pacifier in its mouth and no distractions. Relaxation is one of the most important conditions to get rid of insomnia.

Because of different metabolic and developmental states, young people sleep mainly to relieve nerve fatigue, on the contrary, old people sleep mainly to relieve muscle fatigue (it is difficult to fall asleep).

Sleeping like a fetus, curled up, touching the pillow and sleeping sideways. Health tip: lying on the left side is conducive to the discharge of gastric acid into the digestive tract. If you eat too much dinner, you'd better lie on your left. Lying on the right side will not oppress the heart and is suitable for patients with cardiovascular and cerebrovascular diseases.

2. Soldier style

Sleep on your back with your limbs straight. Health tip: It can make the blood circulation free from any interference, and the facial muscles are in the best state of relaxation. This sleeping position does not oppress the internal organs of the body and is suitable for patients with cerebral arteriosclerosis and hypertension. For men, the best sleeping position is to lie on your back with your legs apart, while prone and lateral lying may have adverse effects on male reproductive system. If the male is obese and snores when lying on his back, he may wish to tilt his head slightly to one side when lying on his back.

3. Free fall

Sleep on your stomach with your hands on your shoulders. Health tip: This sleeping position is beneficial to digestion and suitable for people with poor gastrointestinal function, and it is best for patients with lumbar spondylosis to adopt this sleeping position. But this sleeping position will oppress the heart and lungs and affect breathing. Therefore, patients with heart disease, hypertension and cerebral thrombosis had better not choose this sleeping position.

Extended data

Advantages and disadvantages of posture

Many people think that sleeping is comfortable, so don't worry too much about sleeping position. Guo Xiheng, a respiratory doctor at Beijing Chaoyang Hospital, told reporters that there are four sleeping positions, and the choice of sleeping position varies from person to person. Especially those with hypertension, heart disease, stomach trouble and liver disease, we should pay more attention to choosing the correct sleeping position, otherwise it will not only affect the quality of sleep, but also aggravate the condition. At the same time, the doctor also introduced the advantages and disadvantages of four sleeping positions. You can choose the corresponding sleeping position according to your physical condition.

lie on one's back

It is understood that 60% people choose supine sleeping position, which is also the best public sleeping position recommended by doctors. Advantages: it does not oppress internal organs. Disadvantages: it is easy to cause drooping of the tongue base and hinder breathing. Not suitable for people: people who snore and have respiratory diseases.

lie prostrate

5% people choose to sleep on their stomachs. Advantages: the doctor pointed out that people who adopt this sleeping position will feel safe when sleeping, and it will also help to discharge foreign bodies in the mouth; At the same time, it is good for people with lumbar problems. Disadvantages: it oppresses the heart and lungs and affects breathing. Patients with heart disease, hypertension and cerebral thrombosis should not choose to lie prone.

lie on one's side

Doctors believe that this sleeping position is easy to make people toss and turn during sleep, leading to unstable sleep. Lying on the left side, because the human heart is located on the left side of the body, lying on the left side will oppress the heart, so it is an unhealthy sleeping position. Advantages: Mild compression exercises the heart function, making it less likely to get sick. Disadvantages: compression of the heart and stomach, especially for patients with gastropathy, acute liver disease and gallstones. Lying on the right side, 25% people will sleep facing the right side. Advantages: it will not oppress the heart, and sleep has a sense of stability. Disadvantages: it affects the right lung movement and is not suitable for patients with emphysema.

Many people wake up from their sleep and feel dizzy, backache and exhausted. The reason is mainly caused by improper sleeping posture.

References:

Baidu encyclopedia-sleeping position