I took a nap today, dreaming that I couldn't move, and there was a strong wind in my ear. How many times did I struggle to wake up?

Ghost pressing bed, also called nightmare or sleep paralysis in medicine, refers to that patients stay awake after waking up, but their limbs can't move for more than half a minute, which mostly occurs in teenagers. When people sleep, they usually go through a sleep period, a shallow sleep period and a deep sleep period, and finally enter active sleep. Ghost pressing bed often occurs in this period, which is a protective mechanism of the body. When a person wakes up from a deep sleep, all his muscles except the respiratory muscles and the eye muscles are in a relaxed state, and the muscle tension continues to decrease. There will be a situation in which the brain is awake and the limbs cannot move.