Sleep paralysis often comes with something even stranger: hallucinations.

Because your brain is still partly in dream mode, it may:

  • Create shadowy figures in the room

  • Make you feel like someone is watching you

  • Cause the sensation of pressure on your chest

  • Produce sounds like footsteps, whispers, or breathing

Across cultures, people have described eerily similar experiences:

  • A dark presence standing in the corner

  • A figure sitting on the chest

  • A feeling of being held down

Historically, these episodes were blamed on demons, spirits, or supernatural forces. Today, we know they are neurological — but that doesn’t make them feel any less real in the moment.

Who Is More Likely to Experience It?

Sleep paralysis is more common in people who:

  • Are sleep deprived

  • Have irregular sleep schedules

  • Experience high stress or anxiety

  • Sleep on their backs

  • Have narcolepsy

Teenagers and young adults report it more often, though it can happen at any age.

Up to 1 in 5 people will experience at least one episode in their lifetime.

How Long Does It Last?

Most episodes last between a few seconds and two minutes.

It can feel much longer because of the intense fear involved.