Most people dream for about 90 minutes to two hours every night, whether they remember it or not. You can’t completely eliminate dreaming without seriously harming your health, but you can reduce how much you dream, how vivid those dreams are, and how often you remember them. The key is understanding that dreaming is tied to a specific sleep stage called REM sleep, and anything that shortens or lightens that stage will reduce your dream experience.
Why You Dream in the First Place
Dreams happen primarily during REM sleep, which makes up about 21% of total sleep time in young adults and gradually decreases to around 19% by age 75. During REM, your brain’s memory center and emotional processing areas become highly active, while a chemical called acetylcholine floods the brain at levels similar to full wakefulness. This creates the vivid, emotionally charged mental experiences you recognize as dreams.
Your brain cycles through REM roughly every 90 minutes, with each REM period getting longer as the night goes on. This is why your most memorable dreams tend to happen in the early morning hours. It also means that sleeping less total time, particularly by waking earlier, naturally cuts into your longest and most dream-heavy REM periods.
Lifestyle Changes That Reduce Dreaming
The simplest way to dream less is to give your brain fewer reasons to generate intense dreams. Stress, anxiety, irregular sleep schedules, and eating close to bedtime all increase the likelihood of vivid or disturbing dreams. Addressing these factors won’t eliminate REM sleep, but it can make your dreams less memorable and less disruptive.
Specific strategies that work:
- Keep a consistent sleep schedule. Going to bed and waking at the same time daily stabilizes your sleep cycles and reduces the kind of fragmented sleep that makes you wake up mid-dream, which is what causes you to remember dreams in the first place.
- Avoid screens and stimulation before bed. Emotional or stressful content before sleep gives your brain material to process during REM, often resulting in more vivid dreams.
- Don’t eat heavy meals late at night. Digestion raises your body temperature and metabolism, which can increase brain activity during sleep.
- Limit naps. Daytime naps, especially longer ones, can shift your sleep architecture and increase REM pressure at night.
- Sleep in a cool, dark room. Comfortable sleeping conditions reduce the number of times you briefly wake during the night, making it less likely you’ll catch yourself in the middle of a dream.
How Alcohol Affects Dreams
Alcohol suppresses REM sleep in the first half of the night by acting as a sedative. It delays the onset of your first REM period and reduces overall REM time early on. This is why some people notice they don’t dream as much after drinking. But there’s a catch: in the second half of the night, your brain compensates with a REM rebound. Sleep becomes fragmented, with more wakefulness and lighter sleep stages, and the dreams that do occur can be unusually intense.
Using alcohol as a dream suppressant backfires. The net result is worse sleep quality, more middle-of-the-night awakenings, and often more disturbing dreams in the hours before your alarm goes off.
Cannabis and Dream Suppression
THC is one of the most commonly reported dream suppressants. Early research found that THC decreased both the number of eye movements during REM and the total duration of REM sleep. Many regular cannabis users report rarely dreaming at all. However, the evidence is more mixed than the anecdotal reports suggest. A systematic review of six studies found that REM sleep was unchanged in four of them, increased in one, and decreased in one.
The more consistent finding is what happens when you stop. Withdrawal from regular cannabis use triggers a sharp REM rebound, with increased REM sleep and often a flood of extremely vivid, sometimes disturbing dreams. This rebound effect can last several days to weeks. So while cannabis may reduce dreaming during active use, quitting creates a temporary period of intensified dreaming that many people find unpleasant.
Medications That Suppress REM Sleep
Several classes of prescription medications reduce REM sleep as a side effect, which in turn reduces dreaming. The most well-documented are antidepressants. SSRIs, SNRIs, and older classes like tricyclics and MAO inhibitors all increase the time it takes to enter REM and decrease total REM sleep. If you’re already taking one of these medications and notice you’ve stopped dreaming, that’s a known effect of the drug.
For people specifically trying to stop nightmares rather than all dreams, there is a blood pressure medication called prazosin that has been widely studied for trauma-related nightmares. It’s typically started at a low dose before bedtime and gradually increased. Effective doses have ranged from about 2 mg in older adults to over 13 mg in combat veterans. It’s not FDA-approved specifically for nightmares, but it’s commonly prescribed for this purpose.
None of these medications should be taken just to avoid dreaming. They all carry their own side effects and are prescribed for specific conditions. But if nightmares are the reason you want to stop dreaming, these are options worth discussing with a prescriber.
A Therapy That Changes Your Dreams
If your goal is to stop having specific bad dreams rather than all dreams, Image Rehearsal Therapy (IRT) is the most effective non-drug approach. It works by rewriting the script of a recurring nightmare while you’re awake, then mentally rehearsing the new version before bed until it replaces the original.
The process involves picking your most frequent or distressing nightmare, writing it down in detail, then changing whatever you want: the ending, the setting, the characters, the outcome. You then spend 10 to 20 minutes each day, ideally before sleep, mentally replaying only the new version without revisiting the original. In a study of 33 veterans who completed IRT, about 15% reported their distressing nightmares stopped entirely, and over 90% reported at least moderate improvement in sleep disturbances. Another small study found nightmare frequency dropped by 44% within one month.
IRT doesn’t require a therapist for basic use, though working with one helps if your nightmares are tied to trauma. The core technique is straightforward enough to try on your own.
Why Eliminating Dreams Entirely Is Risky
Before you try to shut down dreaming completely, it’s worth knowing what REM sleep actually does for you. REM deprivation doesn’t just mean fewer dreams. It disrupts the connection between your brain’s emotional center and the region responsible for rational decision-making. Without adequate REM, people show heightened emotional reactivity to negative experiences and impaired ability to integrate emotion with logical thinking. Studies on sleep-deprived individuals found slower, less accurate responses on attention and memory tasks, along with measurably worse moral judgment.
REM sleep is also when your brain consolidates memories. Sleep deprivation disrupts the molecular machinery in the hippocampus that converts short-term memories into long-term ones. People who are REM-deprived show reduced working memory, loss of attentiveness, and difficulty with tasks requiring sustained focus.
The goal, then, shouldn’t be to eliminate dreaming but to reduce the dreams that are bothering you. If you’re having frequent nightmares, that’s a treatable problem. If you simply remember your dreams too often and find it annoying, improving sleep continuity so you stop waking during REM is the most practical fix. And if vivid dreams started after a medication change or new stressor, addressing that root cause will usually resolve things faster than trying to suppress REM sleep itself.