Sleep paralysis is a brief experience of being awake but unable to move. It’s usually accompanied by intense fear and sometimes vivid hallucinations. It’s also one of the more common sleep phenomena, around 8% of the general population will experience it at some point, and it’s harmless, however terrifying it feels in the moment.
This post is for anyone who has had a sleep paralysis episode and wants to understand what’s happening, plus practical guidance on what to do when it happens and how to make it less common.
What is sleep paralysis?
During REM sleep (the stage when most dreaming happens), your brain temporarily paralyses your major muscles to prevent you acting out your dreams. This is called REM atonia, and it’s normal and helpful.
Sleep paralysis happens when your conscious awareness comes online before the muscle paralysis has worn off. You’re awake, but your body is still in sleep mode. You can typically move your eyes and breathe, but not your limbs or speak.
Episodes typically last anywhere from a few seconds to a few minutes. They end on their own.
What does sleep paralysis feel like?
A few common features:
- Inability to move the body, limbs, or speak
- Feeling awake and aware of your surroundings
- Intense fear, often disproportionate to the situation
- Pressure on the chest sensation (real or perceived)
- A sense of presence in the room, sometimes hostile
- Hallucinations, which can be visual (shadowy figures), auditory (footsteps, whispers, buzzing), or tactile (touched, held down)
- Difficulty breathing sensation, though actual breathing is usually fine
- Episodes often occur when falling asleep (hypnagogic) or waking up (hypnopompic)
The hallucinations are the part that makes sleep paralysis particularly frightening. The “hag” or “shadow figure” experiences common to sleep paralysis are well-documented across cultures and centuries, folklore from many traditions describes them in remarkably similar terms.
It’s not supernatural. It’s REM dreaming intruding on partial waking.
Why does sleep paralysis happen?
Common contributors:
Sleep deprivation. The biggest single risk factor. Inadequate sleep increases the likelihood of REM sleep occurring at unusual times, including at the boundaries of waking.
Irregular sleep schedule. Shift work, jet lag, or just inconsistent bed times disrupt normal REM cycling.
Stress and anxiety. Both increase the likelihood of fragmented sleep and REM intrusions.
Sleeping on your back. Episodes are more common in this position for unclear reasons.
Alcohol use before bed, which disrupts REM patterns.
Underlying conditions. Narcolepsy in particular is associated with frequent sleep paralysis. Anxiety disorders and PTSD also raise the risk.
Genetic factors. There’s a hereditary component; sleep paralysis runs in families.
For queer people specifically, the contributing factors that often matter:
- Minority stress producing chronic sleep disruption
- Hypervigilance keeping the nervous system partially activated at rest
- Trauma histories (including but not limited to homophobic or transphobic violence) increasing PTSD-related sleep symptoms
What to do during an episode
In the moment, a few things help:
Try to move small muscles first. Fingers, toes, eyes. Often these come online first, and the larger muscle groups follow. Focusing on a small movement gives you something to do rather than panic.
Slow your breathing. Slow controlled breathing settles the nervous system. You can breathe even though you can’t move other things; use it.
Name what’s happening. “This is sleep paralysis. It’s harmless. It will end within minutes.” Naming it reduces the fear, which itself shortens the episode.
Don’t fight. Trying to thrash out of the paralysis tends to intensify the experience without making the muscles come online faster. Let it pass.
Remember the hallucinations aren’t real. Whatever you see, hear, or feel during sleep paralysis is REM dream content intruding on waking. It is not a threat in the room with you, however convincingly it feels like one.
Most episodes end within 1-3 minutes. The fear often makes them feel much longer.
How to reduce how often it happens
The prevention strategies:
Anchor your sleep schedule. Same wake time every day. Adequate sleep duration (7-9 hours for most adults). See Sleep hygiene that actually works.
Sleep on your side. Many people find episodes are less common in side-sleeping positions.
Reduce alcohol. Particularly in the hours before bed.
Address stress and anxiety. The underlying nervous-system state matters. Box breathing, regular exercise, queer community contact, and therapy where appropriate all help.
Treat underlying conditions. If you have anxiety, depression, PTSD, or another condition affecting sleep, treating that often reduces sleep paralysis as a side effect.
Avoid screens late in the evening. Blue light disrupts melatonin and contributes to fragmented sleep.
When to see a GP
Worth raising with a GP if:
- Episodes are frequent (more than once a week)
- They are leaving you afraid to go to sleep
- They are combined with other sleep symptoms (cataplexy, excessive daytime sleepiness, which could indicate narcolepsy)
- They are interfering with daily functioning
- They are causing significant ongoing distress
For most people, occasional sleep paralysis doesn’t need medical intervention. For frequent or distressing episodes, sleep clinics can investigate underlying causes and CBT-for-Insomnia can help.
A note on the cultural and historical context
Sleep paralysis appears across cultures and history, with strikingly similar descriptions: a malevolent presence pressing on the chest, an inability to move or call out, hallucinations of shadowy figures. Many supernatural traditions (the “Old Hag,” incubi and succubi, kanashibari in Japan, kokma in Newfoundland) likely originate in sleep paralysis experiences.
For queer people, the historical and cultural context sometimes adds an additional layer: feeling not-quite-safe at night maps onto cultural fears in ways that can give the experience particular weight.
Knowing this doesn’t make the experience less frightening in the moment. It does mean you’re part of a very long human tradition of people who have had this happen to them and survived it.
Where to next
- Why can’t I sleep? A queer-affirming guide to insomnia
- Sleep hygiene that actually works
- How to fall asleep when your mind is racing
- What is grounding? for nervous-system regulation
Frightening but harmless. Brief. Endable. You can learn to ride it out.