Why am I floating? I didn't press it this time! Come on, everybody, 3Q.

I've had the same experience. According to the internet, when people are sleeping, they suddenly feel as if a thousand pounds of heavy objects are pressed down and they can't breathe. They seem to wake up and want to shout, but they can't move. It makes people feel puzzled and frightened, as if there is a transparent thing pressing on their bodies, and coupled with dreams, they have been given the name of "ghost pressing down". In fact, this is called "nightmare" in medicine. Like dreaming, nightmares are also a physiological phenomenon. When a person suddenly wakes up from a dream, a part of the nerve center of the brain has woken up, but the nerve center that dominates the muscles has not fully woken up, so even if he feels uncomfortable, he can't move. At this time, if someone wakes him or pushes him, the nightmare will disappear immediately. In fact, this phenomenon is very common. For example, when we just wake up, we can't completely swing our fists; Many people have to wait a few minutes after waking up, which is why the central nervous system works out of sync. Lying on your back, being covered with a thick quilt or putting your hands on your chest, being too nervous during the day and overeating at dinner are all the reasons for nightmares. If the audience is careful, they will find that all the people who are haunted are lying on their backs. If they sleep on their side and avoid the above incentives, they won't have nightmares. The ghost presses the bed, that is, when you sleep, you suddenly feel unconscious but your body can't move. Generally, people who are crushed by ghosts like to sleep backwards, that is, with their chests down and their heads covered. Because the chest is facing down, the pressure on the heart is relatively large, so the blood circulation will be slower, and it is normal for the body to have no intuition. Covering your head is because inhaling too much carbon dioxide leads to lack of oxygen in your brain, so your body is unconscious, so it is very important to adjust your sleeping position. Sometimes, just after a dream, you will associate your body intuition with the dream. Maybe you are familiar with the term ghost bed. I think the people have been filled with all kinds of explanations about the ghost bed. Growing up, the most authoritative, scientific, well-founded and convincing explanation I have heard is that "you just put your hand on your chest when you are asleep, which may increase the burden of breathing, so it feels like a so-called ghost bed." Some people are accompanied by cold sweat, lack of oxygen, and even hallucinations caused by rapid heartbeat, which are all caused by bad sleep habits. Of course, it does not rule out that some people have sleep problems due to organic diseases, and they will die suddenly ... "The so-called' ghost bed' is definitely not a ghost bed, nor is it haunted. In fact, it is a disease of sleep disorder. The phenomenon of "ghost crushing the body" belongs to a kind of sleep paralysis (paralysis) in sleep neurology. At this time, the patient is half awake and half asleep, and the amplitude of brain waves is also awake. Some people will also have hallucinations, but the whole body muscle tension is minimized, which is similar to the "paralysis" state, and the whole body can't move, just like being put on a golden bell jar, that is, the average person. The patients with "cataplexy narcolepsy" often have the situation that "ghosts crush their bodies". Such patients can fall asleep at any time, showing a state of being half awake and half asleep at any time, and often have "sleep hallucinations" and dream of strange people, things and things. When the patient is awake, whenever he is excited, laughing or angry, he will suddenly feel weak and fall down. There is a middle-aged woman who is often possessed by ghosts and has poor sleep quality. She thinks that working hours are stressful and housework is too heavy after work. Later, she quit her job and reduced her housework. As a result, her sleep has not improved. After the author made a 24-hour multifunctional sleep physiological examination for her, the patient suddenly felt an inexplicable force approaching the whole body when she slept at midnight. The dream was weird and horrible, and she couldn't scream if she wanted to. I want to get up, or open my eyes, but I can't move; I have been shouting in my heart, but I can't say it, and I can't make a sound; The muscles of the whole body are tense and paralyzed, the ears are buzzing, and waves of strength are pressing on the chest. No matter how hard I try, I can't do it. After struggling for a few minutes, I can finally do it slowly until I wake up and find myself sweating all over. The author gave her five "multiple sleep tests". A few minutes before the end of sleep, she suffered from sleep paralysis twice. Suddenly, her whole body kept trembling slightly and she couldn't make any sound. At this time, someone touched her immediately, and she immediately woke up and returned to normal. When this woman doesn't go to see a doctor, she often tells people at the bedside that if she finds out that she has the above situation, she will call her or pat her immediately, so that she will be fine. Our sleep cycle is from sleep period, shallow sleep period, deep sleep period, and finally into "rapid eye movement period" (dreaming period). Sleep paralysis is mainly due to the early appearance of rapid eye movement, which leads to the inconsistency of rapid eye movement stage. In fact, in the rapid eye movement stage, the body is essentially at rest, and the connection signal with the brain is temporarily interrupted. This is a defensive measure, so that the human body will not realize the dreams in real life. For example, when dreaming of hitting people, it will not really act, and it will not punch and kick people at the bedside. When the sleep nerve is paralyzed, the brain recovers from sleep rest, and it is too late to reconnect with the body, leaving people in a state of half sleep and half waking, and dreams and realization are intertwined, resulting in disharmony between the body and the brain. At this time, the whole body muscle tension is the lowest, so it will cause you to remember, but you can't get up; I want to exert myself, but I have no strength at all. This is the most common situation of "ghost pressing the bed". Generally speaking, under the circumstances of excessive pressure, anxiety, tension, extreme fatigue, insomnia, lack of sleep or jet lag, sleep will enter the rapid eye movement stage (dreaming stage) ahead of time, and there will be a situation of "ghost pressing the bed"-sleep paralysis. This happens to people of any age, mostly in adolescence, and few people happen continuously. Unless it happens frequently, you need to seek the help of a sleep doctor. As long as you know this symptom, you don't have to worry too much. According to a research report in the United States, 40% to 50% people will experience sleep paralysis at least once in their lives, and the proportion is not low. Therefore, when you encounter "possessed by ghosts", you don't have to worry, go to the so-called "master" to solve your bad luck. Knowing the truth of sleep can make you feel at ease and sit back and relax.

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