Now it has entered winter, when the air pressure can be relatively low and the oxygen content in the air is relatively reduced. Therefore, in order to keep warm when we are indoors, doors and windows are closed and ventilation is not smooth, which is actually very unhealthy. Moreover, this practice will further reduce the indoor oxygen, which often makes people feel depressed and chest tightness. Many people like to sleep with their heads covered, especially in winter. Because of the low temperature, some people like to bury their heads, faces, mouths and noses in quilts. But in fact, this is very wrong, which will easily affect their health. Therefore, you should pay attention to ventilation when sleeping in winter, and you can't sleep with your head covered.
So we should be careful, in the case of limited indoor air conditions, this will cause insufficient oxygen. The harm of sleeping with your head covered is that the quilt is poorly ventilated, the air is dirty, and the human body can't exchange gas normally, which makes the fresh oxygen in the quilt less and less, and the carbon dioxide accumulates more and more, which is easy to cause hypoxia symptoms. In the worst case, people will have nightmares, mental fear and wake up suddenly because of lack of oxygen. Over time, it will also cause sequelae such as neurasthenia. Therefore, when you have a slight cold, it is very important to keep in good health carefully.
We can find that slight cold is relatively cold and dry. At this time, many people will find that their physical fitness has become lower, but many people will not think that this is actually caused by our wrong practices, especially if we don't pay attention to some details in our daily life, which is more likely to lead to health obstacles, so we must be careful.