:''For other uses of the term, see
Night Owl.''
'Night owl' is a term for a person who tends to stay up until late at night. Usually, night
owls keep awake past midnight, with extreme night owls staying awake until 5:00 or 6:00 AM.
Some night owls have a preference or habit for staying up late, or stay up to work the
night shift.
Night owls who have difficulty adopting normal
sleeping and waking times may have
delayed sleep phase syndrome.
Preference for a darker, night time world is called ''
nyctophilia'' or ''scotophilia''.
The opposite of a night owl is an
early bird, lark as opposed to owl, someone who tends to begin sleeping at a time that is considered 'early', thus giving them the opportunity to wake early. In several countries, early birds are called "A-people" and night owls are called "B-people". Researchers use the terms morningness/eveningness.
Famous night owls
The following people have been described as night owls:
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Winston Churchill
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Bill Clinton[1]
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Glenn Gould
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Elvis Presley[2]
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Marcel Proust
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J. R. R. Tolkien
References
1. http://www.time.com/time/moy/hillary.html
2. http://lifestyle.msn.com/MindBodyandSoul/HealthyBody/Article.aspx?cp-documentid=376660
External links
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Rise and Shine: Coping Tips for Night Owls