Sleeping with your head covered is a very bad habit. The principle is simple. When you sleep with a quilt over your head, the carbon dioxide you breathe is trapped in the quilt and then inhaled, resulting in insufficient oxygen, and even hypoxia in severe cases. Due to lack of oxygen all night, I slept in a mess, resulting in no spirit and yawning again and again.
The harm of sleeping with your head covered
First, damage the brain.
From the point of view of western medicine, keeping the head relatively cold is conducive to improving sleep. If you cover your head, it will not only make your head warm, but also make the oxygen in the bed less and less, and carbon dioxide more and more, which will lead to dizziness, headache, head swelling, tinnitus, dizziness, nausea, vomiting and other symptoms the next day, which will make people slow, slow and sleepy.
Second, it harms the respiratory system.
Studies have shown that when people sleep, the respiratory tract can excrete 149 harmful substances, and the skin pores can excrete 17 1 chemical substances. Even healthy people can excrete nearly 10 billion bacteria and viruses through breathing and coughing in one night. If you bury your head under the covers, you will be easily infected by these harmful substances and pathogenic bacteria, causing respiratory inflammation and skin diseases.
Third, it is easy to get dizzy.
Sleeping in winter is different from other seasons. In other seasons, the bedroom door may be opened. However, if the door is closed in winter, the indoor area is small and the air circulation is slow. If you sleep under a quilt, you will feel uncomfortable breathing in that narrow space. The oxygen in the bed is slowly decreasing and the carbon dioxide is increasing. It is undoubtedly very bad to wake up the next day with dizziness and headache.