Power nap
（重定向自Powernap）
![Short break from physical work](/Images/godic/202502/04/Sleep_in_ruins3512.jpg")
![A coffee nap is drinking a cup of coffee before a short 15-minute nap.](/Images/godic/202502/04/Coffe_time3512.jpg")
![EnergyPod, a sleeping pod, located in a small nap room of the Olin library at Wesleyan University[22]](/Images/godic/202502/04/EnergyPod_at_Wesleyan_University3512.jpg")
A power nap is a short sleep which terminates before the occurrence of deep sleep or slow-wave sleep (SWS), intended to quickly revitalize the subject. The expression was coined by Cornell University social psychologist James Maas.