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Dreams are the most common and intense during REM sleep when brain activity increases, but no one knows for sure why we dream. Dreaming is normal and healthy, but frequent nightmares can interfere with sleep.
Most people have a bad dream or nightmare every once in a while with no notable impact on their sleep quality. When nightmares happen often, though, they can become a barrier to sleep. For some people, nightmares occur multiple times per week and/or more than once in any given night.
Nightmares are bad dreams that wake you up, often with feelings worry or fear. Nightmares occur more frequently during rapid eye movement (REM) sleep. Frequent nightmares that interfere with daily functioning, mood, or sleep, may indicate a nightmare disorder.
How Long Do We Dream Each Night? Researchers estimate that the average person spends about two hours dreaming each night. REM sleep periods early in the night generally last about 10 minutes and gradually increase in length throughout the night to a maximum of about one hour.
Vivid dreams are common and their content can range from pleasant to disturbing. Learn why vivid dreams happen and what to do if you want to avoid them.
Circadian rhythms change as people age, often leading to disrupted sleep patterns. Increased prevalence of mental and physical health conditions can increase risk of fragmented sleep. Sleep disturbances can decrease sleep quality and quantity and become chronic sleep issues if not addressed.
Hypnagogic hallucinations, also sometimes referred to as waking dreams, are a type of hallucination that occurs as a person is drifting off to sleep. In general, hallucinations involve seeing, hearing, feeling, or smelling something that is not actually present.
In many cases, nightmares are infrequent or go away on their own. However, because recurring nightmares can negatively impact sleep, you might hope to try to prevent them from happening. We examine the factors that can contribute to bad dreams and how to stop having nightmares and get better sleep.
Recurring dreams can involve disturbing content, so people who have them may be curious about why they occur and what they mean. We explore what recurring dreams mean, common recurring dream scenarios, and ways to stop having recurring dreams.
During hypnopompic hallucinations, you are sensing things that are not actually happening while in a state between dreaming and waking. In the majority of cases, hypnopompic hallucinations are visual, although some can involve sound and tactile sensations.