I can't move when I sleep, and I know what's going on, but I feel a woman on the other half of the bed holding my neck and telling me to turn around, but I can't turn around.

When people are sleeping, they suddenly feel as if there is a thousand pounds of weight on their bodies, and they can't breathe. They seem to wake up and want to shout, but they can't move. People are confused and frightened. It's as if there is a transparent thing pressing on them, coupled with dreams, giving them a name called "pressing ghosts." 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.