1.Pillow is too high or too low
From the physiological point of view, the pillow should be 8-12 cm high. If the pillow is too low, too much blood flows into the brain, which easily makes the brain feel excited and also burdens our cervical spine. Too high, it will easy to snoring, and cause neck discomfort or humpback.
2.Sleep under your hands
Sleeping with both hands under the head will not only affect blood circulation and cause numbness and pain in the arms, but also easily increase the abdominal pressure, which will cause esophagitis. Therefore, it is not advisable to use both hands as a pillow when sleeping.
3.Cover your head with a quilt
It can easily cause breathing difficulties. At the same time, inhaling the carbon dioxide exhaled by oneself is extremely detrimental to health. Infants and young children should not do this, otherwise there is a danger of suffocation.
4.Open your mouth to breathe
Sleeping with your mouth closed at night is the best way. And breathing with your mouth open will not only inhale dust, but also easily stimulate your trachea and lungs by cold air. It is best to breathe through the nose. Nose hair can block some dust, and the nasal cavity can warm the inhaled cold air, which is good for health.
Vigorous activity before bedtime will make the brain's nerve cells become excited. This excitement will not calm down in a short time, and people will not be able to fall asleep quickly. Therefore, you should try to keep your body calm before going to bed, you can also do some light activities, such as walking.
6.Sleep against the wind
The human's ability to adapt to environmental changes is reduced during sleep, and it is easy to be cold. Therefore, the place to sleep should avoid the vents, and the bed should be a certain distance away from the windows and doors.
7.Sit and sleep
Some people fall asleep on the sofa because they are too tired at work, which made the second hidden danger appear. Because sitting and sleeping will slow down the heart rate, dilate the blood vessels, and reduce the blood flow to the various organs. In addition, the stomach requires blood supply for digestion, which aggravates the lack of oxygen in the brain, leading to dizziness and tinnitus.
8.Get angry before going to bed
Getting angry before going to bed can make people’s heart beat faster, short of breath, and many thoughts, making it difficult to fall asleep.
9.Eat a full meal before bedtime
If you overeat before going to bed, the stomach and intestines must be digested. The stomach filled with food will constantly stimulate the brain. If the brain is excited, people will not fall asleep peacefully.
10.Drink tea before going to bed
Tea contains caffeine and other substances, which can stimulate the central nervous system and make people excited. If you drink tea before going to bed, especially strong tea, the central nervous system will be more excited and make it difficult to fall asleep.
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