Sleep paralysis: why it happens, the symptoms, and how to cope

CareOps editorial team · October 28, 2026 · 10 min read

Mental wellness information and service guidance published by CareOps.

You wake up and can't move a finger, your chest feels pressed down, and it seems as if someone is in the room. You try to shout, but no sound comes out, and a few seconds feel like minutes. Here is what this experience, known as sleep paralysis, actually is, why it happens and what you can try in the moment and afterward.

What is sleep paralysis? How it happens #

Through the night we pass several times through REM sleep, the stage with the most dreaming. According to the American Academy of Sleep Medicine, during REM sleep the brain relaxes the muscles and keeps the body still, so that you don't act out your dreams. In sleep paralysis, that stillness carries over while you are falling asleep or waking up, so your mind is awake while your body is still in REM sleep. You are aware of your surroundings but can't move your arms, legs, body or head, and you can't speak.

It's frightening, but it isn't dangerous in itself. Both the American Academy of Sleep Medicine and Cleveland Clinic describe sleep paralysis as not a serious medical risk on its own. An episode lasts from a few seconds to a few minutes and usually ends on its own. It can also end when someone touches you or speaks to you. Some people have it once in their life; others have it several times a year.

Sleep paralysis symptoms: unable to move, pressure on the chest #

• Unable to move or speak: your limbs and body won't budge, and no sound comes when you try to call out. You can often still move your eyes.
• Pressure on the chest: it can feel as if someone is sitting on your chest and you can't get air. In reality, you can still breathe.
• Hallucinations: you may see, hear or feel things that aren't there, or sense that another person is in the room.
• Fear and helplessness: not being able to move can be terrifying and feel like panic. Afterward you may feel dazed and tired.

If you often wake up startled by frightening dreams, see why we have nightmares for more on nightmares and how to handle them.

Why do a presence, voices or sounds feel so real? #

Many people describe someone standing in the room, footsteps or a buzzing noise, or a voice calling them during sleep paralysis. The American Academy of Sleep Medicine notes that some people see, hear or feel things that aren't there during an episode, and may even think another person is in the room. REM sleep is the stage of vivid dreaming, so one way to understand it is that dreamlike sensations blend into your waking awareness and feel real. Because you can't move, fear rises, and that fear can make the scene even more frightening.

So feeling that you saw a ghost isn't strange; many people go through similar scenes. These sensations arise at the border between sleep and waking, and they fade as your body fully wakes. If you often hear sounds or voices that aren't there outside of these episodes, or it continues during the day, have it checked separately in a clinical visit.

Why does sleep paralysis happen? Sleep loss, irregular sleep and stress #

Cleveland Clinic notes that the exact cause of sleep paralysis is unknown. Still, several factors are known to go along with it.

• Sleep loss: not getting enough sleep makes sleep paralysis more likely, which is why it often shows up during exams or after all-nighters.
• An irregular sleep schedule: it happens more when your sleep and wake times change often or you work shifts.
• Stress and mental health difficulties: it tends to appear in stressful periods and can go along with anxiety, panic or PTSD.
• Sleeping on your back: the American Academy of Sleep Medicine notes it seems to occur more often when you sleep on your back.
• Other sleep problems and medications: it can come with sleep disorders such as narcolepsy or sleep apnea, and with some medications or substance use.
• Family history and age: it's more likely if a relative has it. It usually first appears in the teen years and is most common in the 20s and 30s.

How common is sleep paralysis? #

It's more common than many people think. A systematic review of 35 studies with 36,533 people in total (Sharpless & Barber, 2011) found that 7.6% of the general population, 28.3% of students and 31.9% of psychiatric patients had experienced sleep paralysis at least once. Among people with panic disorder, the figure was 34.6%. The higher rate in students fits with lives where sleep is often short and schedules irregular.

What to do during sleep paralysis #

There's no sure way to stop an episode while it's happening, but some approaches are commonly suggested. Knowing them in advance can make the next episode less alarming.

1. Remind yourself what's happening: tell yourself, "This is sleep paralysis. My body just hasn't woken up yet, and it will pass." Naming it can take some of the edge off the fear.
2. Slow your breathing: even if your chest feels pressed, you are breathing. Rather than forcing big breaths in, focus on breathing out slowly.
3. Move something small: some people come out of it sooner by focusing on a tiny movement, such as one finger, then two. Wiggling your toes or blinking are other options.
4. Settle your body afterward: turn on a light, sit up for a moment or sip some water. If sleep won't come, do something quiet and lie down again when you feel sleepy.

If your heart is still pounding afterward and you're scared to fall asleep again, grounding techniques can help bring your mind back to the present.

How to have sleep paralysis less often: steady sleep #

The foundation for having fewer episodes is looking after your sleep. The American Academy of Sleep Medicine suggests getting 7 to 9 hours of sleep regularly when sleep loss is a trigger, and Cleveland Clinic recommends set sleep and wake times, a dark and quiet room, putting phones and screens away before bed, and winding down with something relaxing such as a bath or reading. Cognitive behavioral therapy for anxiety and stress may also help.

If worries keep you up once you lie down, see when your thoughts race as you try to sleep, and if your sleep itself has been unsettled for weeks, see what causes insomnia. Writing down your sleep and any episodes for about two weeks can show which days they cluster on. Our sleep diary guide shows how.

How is your sleep lately? An insomnia check #

If short or broken nights have been adding up, the CareOps insomnia check (Athens Insomnia Scale, AIS) looks at falling asleep, waking during the night, sleep quality and how you feel during the day. It isn't a sleep paralysis test, but it can show how much sleep loss, a common trigger, is going on. You can take it right away, with no login.

If it keeps happening: checking for sleep disorders such as narcolepsy #

Sleep paralysis that occurs on its own, without other sleep problems, is common and usually doesn't harm your sleep or health. However, the American Academy of Sleep Medicine notes that it can be one sign of narcolepsy. Narcolepsy can bring overwhelming daytime sleepiness, broken sleep at night, hallucinations as you fall asleep or wake, and cataplexy, sudden muscle weakness triggered by strong emotions such as laughter, surprise or anger. If you have these symptoms as well, talk with a sleep clinic.

In a clinical visit, you'll usually be asked when it started, how often and how long episodes last, about your sleep habits, any medications and whether relatives have similar experiences, and a two-week sleep diary helps. Most people don't need tests, but if another sleep disorder such as narcolepsy is suspected, an overnight sleep study or a daytime nap test may be done. Treatment is decided in the clinic based on the cause.

If sleep has started to feel scary, talk it through by day #

After a frightening episode, the next night can feel worrying, and that worry unsettles sleep again. Looking at recent stress and sleep together can show where to break the loop. CareOps Maeumi is an AI counseling app that runs sessions with approaches such as cognitive behavioral therapy (CBT) and acceptance and commitment therapy (ACT), helps you look step by step at what's weighing on you and the worries that come at bedtime, and remembers past sessions so the next one picks up where you left off. Get the app

This guide shares mental wellness information. If you are in immediate danger, contact emergency services where you are. Support and contact information.