Today: A coffee nap includes drinking coffee, napping for less than 30 minutes, and waking up right as the caffeine kicks in. 

The U.K. Department of Transport even tested the practice in a small case study that found that taking a nap less than 15 minutes after consuming caffeine made drivers more alert.

Kristin Kirkpatrick, a registered dietician at the Cleveland Clinic, confirmed that short naps have been found to be beneficial both “in providing enhanced energy and alertness.” She also cited a study that links short naps to potentially reducing the risk of heart attacks and strokes. That said, the factor of caffeine tolerance is also at play in this situation.

“Coffee naps may be beneficial for the right person,” said Kirkpatrick. “Individuals vary based on their metabolism of caffeine.”

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