Maybe you’ve seen the meme: “This is my sleep paralysis demon: [insert photo].” The viral idea builds on a very real condition in which a person is conscious but unable to move. In some cases, people experiencing sleep paralysis have frightening and even recurring visions. Known as sleep paralysis demons, these terrors don’t haunt nightmares, but reality. Unfortunately for me, I had my very own sleep paralysis demon. The only problem (well, besides the bone-chilling looming presence in my bedroom)? I had no idea what it was until seven years later.
True Life: I Had a Sleep Paralysis Demon. Here’s What It Felt Like
Plus, ways to prevent it

Meet the Expert
Dr. Rebecca Robbins, Ph.D., is ŌURA’s resident sleep expert and an assistant professor of medicine at Harvard Medical School, division of sleep medicine. She’s the co-author of Sleep for Success!, and her medical expertise and insights have been cited in many publications, like The New York Times and The Huffington Post. She’s also made appearances on popular talk shows, from The Today Show to Live with Kelly and Ryan.
What Is a Sleep Paralysis Demon?
According to Robbins, “sleep paralysis refers to when a sleeper wakes from slumber but cannot move.” Per Stanford Medicine, it’s a normal part of REM (or rapid eye movement) sleep, which is defined by Cleveland Clinic as one of the two main stages of sleep important for memory, mood and emotions where there’s an increase of brain activity and, namely, vivid dreaming. “Some individuals who experience sleep paralysis also can experience hallucinations, some of which can be quite disturbing and take the form of scary figures, such as demons or monsters,” explains Robbins. In short: a living nightmare.
Considering this happens during one the deepest parts of your sleep, when your brain is highly active, it makes sense that it feels impossible to wake up and regain control of your movements. Normal sleepers can experience sleep paralysis, but Stanford Medicine reports that it’s quite common for those who are under increased stress, sleep deprived, consuming excessive alcohol or experiencing narcolepsy.
My Experience: A Shadowy Figure That Left Me Frozen
Experiencing three of the four major triggers outlined by Stanford Medicine (stress, sleep deprivation and binge-drinking alcohol), it was only a matter of time before I was haunted by the shadowy figure in my sleep. Let me set the scene: I was a 20-year-old sophomore living in mandatory on-campus housing the year I came face-to-face with my sleep paralysis demon. After a long day of classes covering dense readings I didn’t fully comprehend (or finish, for that matter), my anxiety from the workload and tight deadlines was snowballing like the tension in a Stephen King novel. But, like any good horror story, bad decisions were made. There was a FIJI house party calling my name (frat parties were my kryptonite and my unhealthy coping mechanism), and FOMO to this particular college student took priority over chronic sleep deprivation.
And although I was exhausted and overwhelmed with all my looming assignments, I figured a 30-minute nap would do that trick before the pregame—short enough to give me time to catch up on some of my work but long enough to give my brain a much-need refresh. The large sectional sofa in our living room seemed like a safe spot. My own bed was a dangerous option where’d I’d get too comfortable and sleep too long. Plus, our apartment’s heavy and creaky front door would easily wake me as soon as my roommates returned home. And so, I let my mind drift off.
I came to slowly, blinking at the ceiling. My sight was clouded but I could tell the sun had set; the blue glow from the emergency campus phones had taken its place. I heard a faint buzz coming from our gigantic, bulbed “EAT” sign in the kitchen, followed by the shuffling of feet, which I registered as my roommate’s. A large decorative pillow lay on my chest, blocking my face from her view. The weight of its stuffed polyester grew heavy, and suddenly, I felt the urge to shake it off before it crushed me. After a few groggy and dazed seconds, it began to register that I wasn’t getting up. My limbs were lead and my mouth was glued shut—and who was that black, ominous figure in the corner of the room?
There weren’t red eyes, sharp teeth or other characteristic monster features. Instead, the onyx shadow looming in my periphery lacked any physicality or human attributes, and this absence of things overwhelmed me with the most intense fear I’d ever known. But no matter how hard I tried to scream for my roommate to shake me or will myself to sit the hell up, nothing happened. I focused my vision on the ceiling, as if the longer I stared, the more my body would do as I wanted it to. I think the experience lasted no more than one minute, but that one minute felt like one hour. And like waking from a dream or nightmare, I transitioned out of the paralyzed state with a groggy and perplexed lack of understanding about it all.

The Science Behind Sleep Paralysis and Hallucinations
Harvard Health Publishing describes sleep paralysis as “a temporary sense of paralysis that occurs between stages of wakefulness and sleep,” when you are conscious but incapable of speaking or moving. “One of the primary differences between sleep paralysis and other sleep states, such as dreaming and nightmares, is that you are awake during an episode of sleep paralysis,” the report finds. As the medical journal explains, your muscles are in a state of relaxation to reduce movment and prevent you from acting out your dreams. This is otherwise known as REM atonia, and usually ends the moment you wake up. “However, during sleep paralysis you wake up suddenly from REM, regaining awareness even as your muscles are still relaxed, in atonia,” the report shows. Hence, the temporary paralysis despite your awareness.
It might sound like lucid dreaming, but there’s a key difference. “Lucid dreaming is where the sleeper is aware that they are dreaming,” notes Robbins, “and in some instances, the sleeper can control the events of the dream, but they are not awake. During sleep paralysis, individuals are awake.” The sleeper becomes aware of their surroundings but simply cannot speak or move.
Scared and embarrassed, I never told anyone about what happened until seven years later when it dawned on me during a conversation when I first heard the term “sleep paralysis demon.” The realization sent a shiver down my spine. I had to understand more. From my conversation with Robbins, I learned that my college horror story was in fact a sleep paralysis event—I woke up from my sleep but had no ability to move since I was still in my REM cycle of sleep. What about that ominous shadow? Well, Robbins tells me that was a common hallucination often accompanied by sleep paralysis.
Considering the bloodshot all-nighters and my inebriated weekends, I was a walking ad for the typical, rundown student. And after chatting with Robbins, it became clear that this lifestyle made me more susceptible to experiencing a sleep paralysis hallucination. With no healthy way to surmount it all—tests, research, readings, essays, time management, social life, sleep and so on—what other way for my subconscious to cope than to personify my stress into one big shadowy blob and scare the bejesus out of me? Its message: Get your shit together.
And get it together I did. A few things in my control that I’ve put into practice over the years: Cut back on alcohol, read before bed and exercise daily (walking counts). Lucky for me, I haven’t seen my sleep paralysis demon since that fateful night, but if we meet again one forsaken slumber, I’ll make a point to tell him I did manage to bag that double major in the end.
Until then, sweet dreams.
Tips to Prevent Sleep Paralysis (and Its Demons)
Even though Harvard assures that an episode of sleep paralysis typically lasts for just a few seconds to minutes, you don’t want to experience one if you can help it—and that’s coming from someone who’s lived through it. Good news: There are a few ways you can prevent sleep paralysis (and the demon hallucination that may or may not tag along with it) from occurring, which I detail below.
- Improve your sleep hygiene to avoid sleep paralysis: According to a study in the Journal of Medical Science, Cureus, sleep irregularity or “insufficient sleep syndrome causes emotional disturbances and affects the brain's functions, the brain's structure, and the cardiovascular system.” ICYDK, there are a few things you shouldn’t do before bed if you want a better sleep, such as have that last glass of wine or doomscroll on TikTok. Robbins tells me that maintaining a stable sleep schedule is one of the most important things you can implement if you want to prevent a state of sleep paralysis from occurring. Additionally, falling asleep and waking up at the same time each day will also be extremely beneficial to your overall sleep hygiene and help you kick your bad bedtime habits.
- Manage your stress and anxiety before bed: Yes, you can even begin to practice smaller habits—like deep breathing, meditation and exercise—even before you go to sleep that will help you avoid sleep paralysis. Start by “creating a comfortable environment in your bedroom that is dark and quiet,” suggests Robbins. This will allow your body to fully relax.
- Know when to seek professional help: “Sleep paralysis can be scary, but it is a rare and relatively non-worrisome condition,” assures Robbins. If you experience frequent episodes, aka recurrent sleep paralysis—as defined by Harvard Health Publishing, this might be related to narcolepsy. “If you experience recurring sleep paralysis, it is important to speak to your healthcare provider,” as they’ll be able to get to the root cause of it and plan a course of action on how to prevent future episodes.
Frequently Asked Questions
Why Did I Have a Demonic Dream?
OK, so you saw that spooky, shadowy figure looming over you in your sleep...when you could have sworn you were awake. I’m here to assure you that you’re not crazy—you just experienced sleep paralysis, which I define and explain above. This can be due to a number of reasons, which you may want to consult your doctor about if it keeps reoccurring. Try brushing up on a few editor-approved sleep trends to get your sleep hygiene in check, but the most important things to watch are your stress levels, alcohol consumption and sleep regularity.
Why Do I Feel Someone's Presence at Night?
If you’ve ever felt a presence in your sleep, you might be experiencing sleep paralysis, which typically occurs during your REM sleep. These hallucinations don’t always have to come in the form of a dark, demonic figure looming over your frame of sight like it did me, it can come to you as a feeling. Don’t panic, these hallucinations are normal occurrence during sleep paralysis, which Robbins notes is fairly common and not at all concerning if it happens once or twice.
What Is Sleep Delusion?
Different than sleep paralysis, sleep delusion is often caused when a person is “going without sleep for long periods of time, [which] can produce a range of experiences, including perceptual distortions and hallucinations,” per the interdisciplinary journal Frontiers in Psychiatry. Increased time awake and without restorative sleep can lead to psychotic symptoms, from “simple visual/somatosensory misperceptions to hallucinations and delusions, ending in a condition resembling acute psychosis.” Sleep delusion can often be solved after a person gets some rest, though it’s important to consult a doctor about the underlying causes that’s preventing a state of sleep in the first place.