First, it affects breathing. Because sleeping posture leads to poor breathing, the oxygen supply in the body will naturally be insufficient. The posture of pressing the chest can also induce various heart diseases.
Second, the sleeping posture will oppress the eyeball, and the eye will be easily congested, which will lead to an increase in intraocular pressure. Often there will be temporary blurred vision after waking up, especially for people with high myopia.
Third, after falling asleep, the heart rate will gradually slow down, the speed of blood flowing through various tissues will be relatively slow, and the blood flowing into the brain will be less than usual. After lunch, more blood will enter the gastrointestinal tract to help digestion. Sleeping on your stomach will aggravate cerebral ischemia, which will eventually lead to dizziness, tinnitus and numbness in your legs.
Fourth, if the head is placed on the arm for a long time, the blood circulation of the arm is blocked, the nerve conduction is affected, and symptoms such as numbness and soreness of the arm are prone to occur.