A power nap is a short sleep that terminates before deep sleep (slow-wave sleep; SWS);
it is intended to quickly revitalize the subject. The power nap is meant to maximize the benefits of sleep versus time. It is used to supplement normal sleep, especially when a sleeper has accumulated a sleep deficit. #powernap#nap Various durations are recommended for power naps, which are very short compared to regular sleep. The short duration of a power nap is designed to prevent nappers from entering SWS. Depending on duration and intensity, awakenings out of SWS results in sleep inertia, a phenomenon associated with grogginess, disorientation, and even more fatigue than prior to napping. Since sleep is the most effective and beneficial recovery method from fatigue, experts recommend considering duration vs. risk of entering SWS.[2] weki #nasanap Power naps restore alertness, performance, and learning ability.[3][4]
A nap may also reverse the hormonal impact of a night of poor sleep or reverse the damage of sleep deprivation.[5] A University of Düsseldorf study found superior memory recall once a person had reached 6 minutes of sleep, suggesting that the onset of sleep may initiate active memory processes of consolidation which—once triggered—remains effective even if sleep is terminated.[4] According to clinical studies among men and women, power nappers of any frequency or duration had a significantly lower coronary mortality ratio (MR) than those not napping. Specifically, those occasionally napping had a 12% lower coronary mortality, whereas those systematically napping had a 37% lower coronary mortality.[6] #shortsleep
