Sleep paralysis occurs when “the brain wakes up before the body’s built-in ‘dream paralysis’ has switched off.” In this state, your mind is alert, but your body remains frozen in REM sleep, making it impossible to move, speak, or react normally.

This creates a frightening experience. The vivid hallucinations and heavy pressure on the chest come from the brain trying to interpret this unusual state. Because you’re partly dreaming and partly awake, everything can feel intensely real and threatening.

Even so, “though it can feel like a brush with death,” sleep paralysis is not dangerous. It passes on its own, and no lasting harm is done. Knowing this can help reduce panic when it happens.

Prevention focuses on routine and balance. A consistent sleep schedule, reduced stress, and limiting screen exposure before bed can significantly lower the chances of experiencing it.

During an episode, small actions can help. Focus on calm, slow breathing and try to move a tiny muscle — like a finger or toe — to regain control. Sharing the experience with others also matters, reminding people they are “not cursed, crazy, or alone.”