A *Tha-Thump* in the Night: The Heart-Pounding Science of Nightmares

By SaVanna Shoemaker, MS, RDN, LD on Mar 16, 2022

Dimitriu says, “The brain is essentially awake during REM sleep, and the body is paralyzed (on purpose).” During this time, he explains, the brain is processing and storing memories, while also rehearsing past events and playing through potential future scenarios. Because of this process, dreams can be “good and bad in some ways, because that is also the reality of daily life.”

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