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In adults, it can feel like a dream to have time for a nap. Still, plenty of adults manage to squeeze in a midday snooze: ... That's why an ideal nap length is 15 to 30 minutes, Waters says. ...
The optimal nap duration is around 10–20 minutes, as researchers have proven that it takes at least 30 minutes to enter slow-wave sleep, the deepest period of sleep. [46] Napping too long and entering the slow wave cycles can make it difficult to awake from the nap and leave one feeling unrested. This period of drowsiness is called sleep inertia.
A nap is a short period of sleep, typically taken during daytime hours as an adjunct to the usual nocturnal sleep period. Naps are most often taken as a response to drowsiness during waking hours. A nap is a form of biphasic or polyphasic sleep, where the latter terms also include longer periods of sleep in addition to one period. For years ...
A power nap, also known as a Stage 2 nap, is a short slumber of 20 minutes or less which terminates before the occurrence of deep slow-wave sleep, intended to quickly revitalize the napper. The expression "power nap" was coined by Cornell University social psychologist James Maas. [2] The 20-minute nap increases alertness and motor skills. [2]
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A study conducted at the University of California, Riverside showed that participants performed similarly on an exam after a 90-minute nap compared to a full eight hours of sleep. [62] Similarly, NASA conducted a study involving its pilots, where even a minimal 30 to 40-minute nap improved pilot's "performance by 34% and their alertness by 54% ...
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