Sleep Your Way To Smart

New research from the University of California-Berkeley finds just a short nap can significantly boost and restore your brain power.

Scientists compared test results between a group of healthy young adults who took a 90-minute nap during the day, and a group who stayed awake all day.

The nap group performed much better on the tests, suggesting sleep is needed to clear the brain's memory storage and to make room for new information.

And an additional note, it seems this refresher ability comes during stage two, non-rem sleep.

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