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From Nordan Symposia
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==Origin==
[http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] nappen, from [http://nordan.daynal.org/wiki/index.php?title=English#ca._600-1100.09THE_OLD_ENGLISH.2C_OR_ANGLO-SAXON_PERIOD Old English] hnappian; akin to Old High German hnaffezen to doze
*[http://en.wikipedia.org/wiki/12th_century before 12th Century]
==Definitions==
*1: to [[sleep]] briefly especially during the day : doze
*2: to be off guard
==Description==
A '''nap''' is a short period of [[sleep]], usually during daytime. Naps may be taken when one becomes drowsy during the day or as a [[traditional]] daily [[practice]]. It is common for small [[children]] and elderly people to take frequent naps. However, naps are not recommended for those suffering from insomnia or [[depression]] in order to avoid worsening nocturnal sleep.
==Benefits==
Napping has been found to be beneficial. Napping for 20 minutes can help refresh the [[mind]], improve overall alertness, boost [[mood]] and increase productivity. Napping may benefit the [[heart]]. In a six-year study of [[Greek]] adults, [[researchers]] found that men who took naps at least three times a week had a 37 percent lower risk of [[heart]]-related [[death]]. Napping may also relieve headaches.
[[Scientists]] have been investigating the benefits of napping for years: the 20-minute nap, as well as [[sleep]] durations of 1–2 hours. [[Performance]] across a wide range of [[cognitive]] [[processes]] have been tested. Studies [[demonstrate]] that naps are as [[good]] as a night of [[sleep]] for some types of [[memory]] tasks. A [http://en.wikipedia.org/wiki/NASA NASA] [[study]] led by David F. Dinges, professor at the [http://en.wikipedia.org/wiki/University_of_Pennsylvania_School_of_Medicine University of Pennsylvania School of Medicine], found that naps can improve certain [[memory]] [[functions]] and that long naps are better than short ones. In that NASA [[study]], volunteers spent several days living on one of 18 different [[sleep]] schedules, all in a [[laboratory]] setting. To [[measure]] the effectiveness of the naps, tests probing [[memory]], alertness, response time, and other [[cognitive]] [[skills]] were used.
The [http://en.wikipedia.org/wiki/National_Institute_of_Mental_Health National Institute of Mental Health] funded a team of doctors, led by Alan Hobson, Robert Stickgold, and [[colleagues]] at Harvard University for a [[study]] which showed that a midday snooze reverses [http://en.wikipedia.org/wiki/Information_overload information overload]. Reporting in [http://en.wikipedia.org/wiki/Nature_Neuroscience Nature Neuroscience], Sara Mednick, Stickgold and colleagues also [[demonstrated]] that, in some cases, a 1-hour nap could even boost [[performance]] to an [[individual]]'s top levels. The NIMH team wrote: "The bottom line is: we should stop feeling [[guilty]] about taking that 'power nap' at [[work]]."[http://en.wikipedia.org/wiki/Nap]
[[Category: Health]]
==Origin==
[http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] nappen, from [http://nordan.daynal.org/wiki/index.php?title=English#ca._600-1100.09THE_OLD_ENGLISH.2C_OR_ANGLO-SAXON_PERIOD Old English] hnappian; akin to Old High German hnaffezen to doze
*[http://en.wikipedia.org/wiki/12th_century before 12th Century]
==Definitions==
*1: to [[sleep]] briefly especially during the day : doze
*2: to be off guard
==Description==
A '''nap''' is a short period of [[sleep]], usually during daytime. Naps may be taken when one becomes drowsy during the day or as a [[traditional]] daily [[practice]]. It is common for small [[children]] and elderly people to take frequent naps. However, naps are not recommended for those suffering from insomnia or [[depression]] in order to avoid worsening nocturnal sleep.
==Benefits==
Napping has been found to be beneficial. Napping for 20 minutes can help refresh the [[mind]], improve overall alertness, boost [[mood]] and increase productivity. Napping may benefit the [[heart]]. In a six-year study of [[Greek]] adults, [[researchers]] found that men who took naps at least three times a week had a 37 percent lower risk of [[heart]]-related [[death]]. Napping may also relieve headaches.
[[Scientists]] have been investigating the benefits of napping for years: the 20-minute nap, as well as [[sleep]] durations of 1–2 hours. [[Performance]] across a wide range of [[cognitive]] [[processes]] have been tested. Studies [[demonstrate]] that naps are as [[good]] as a night of [[sleep]] for some types of [[memory]] tasks. A [http://en.wikipedia.org/wiki/NASA NASA] [[study]] led by David F. Dinges, professor at the [http://en.wikipedia.org/wiki/University_of_Pennsylvania_School_of_Medicine University of Pennsylvania School of Medicine], found that naps can improve certain [[memory]] [[functions]] and that long naps are better than short ones. In that NASA [[study]], volunteers spent several days living on one of 18 different [[sleep]] schedules, all in a [[laboratory]] setting. To [[measure]] the effectiveness of the naps, tests probing [[memory]], alertness, response time, and other [[cognitive]] [[skills]] were used.
The [http://en.wikipedia.org/wiki/National_Institute_of_Mental_Health National Institute of Mental Health] funded a team of doctors, led by Alan Hobson, Robert Stickgold, and [[colleagues]] at Harvard University for a [[study]] which showed that a midday snooze reverses [http://en.wikipedia.org/wiki/Information_overload information overload]. Reporting in [http://en.wikipedia.org/wiki/Nature_Neuroscience Nature Neuroscience], Sara Mednick, Stickgold and colleagues also [[demonstrated]] that, in some cases, a 1-hour nap could even boost [[performance]] to an [[individual]]'s top levels. The NIMH team wrote: "The bottom line is: we should stop feeling [[guilty]] about taking that 'power nap' at [[work]]."[http://en.wikipedia.org/wiki/Nap]
[[Category: Health]]
