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Your Night-Owl Habit Has a Downside
Ninety percent of us have had a nightmare in the past year. But night owls (especially female ones) are likelier to be among the 2-6% who have bad dreams weekly, finds a study at Yúzúncú Yil University in Turkey. Sleep patterns are one possible culprit: Staying up and waking up late throws off circadian rhythms. And while everyone’s level of cortisol rises in the morning, the stress hormone may invade night owls’ dreams more—because it coincides with the REM cycle they’re having right before they wake up.
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