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This is Scientific American 60-Second Science. I'm Sophie Bushwick.Got a minute?

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The lunar cycle affects the night sky, the tides and even the fertility of certain marine species.

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And it turns out, we can add your shuteye to the list.

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According to a new study, humans sleep poorly on nights near a full moon.

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The work is published in the journal Current Biology.

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To test the moon's effect, 33 adult volunteers of both sexes and various ages spent several nights in a sleep lab.

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As they dozed, researchers monitored their brain activity, eye movements and hormone levels.

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On nights closer to a full moon, the subjects took an average of five minutes longer to fall asleep, and slept for 20 minutes less.

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In addition, brain activity decreased by 30 percent during the sleep stage that the brain normally uses to recover from its daylight work.

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And levels of melatonin, the hormone that helps regulate sleep cycles, dropped.

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On these nights, the sleepers complained of poor sleep quality even though they were unaware of the lunar cycle.

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On the bright side, not a single participant turned into a werewolf.

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In this cohort.

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Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.

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