Nightmares: Symptoms, Causes, & Treatment | Sleep …
https://www.sleepfoundation.org/nightmares
Oct 09, 2020 · Nightmares are vivid dreams that may be threatening, upsetting, bizarre, or otherwise bothersome. They occur more often during rapid eye movement (REM) sleep, the stage of sleep associated with intense dreaming. Nightmares arise more frequently in the second half of the night when more time is spent in REM sleep. Occupation: Staff Writer
Occupation: Staff Writer
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