ELi5: Do you get the same benefits from sleep if you’ve had a nightmare?
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Nightmares occur during REM sleep, which is the shortest sleep cycle, and usually happens during the last three hours of sleep. It’s what’s responsible for making you feel well rested. Interrupting that sleep can make you feel sloth-like, tired, and sapped of energy.
So, to answer your question, as long as you don’t wake up during a nightmare, it shouldn’t affect the quality of your sleep
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