Related topics: sleep apnea , sleep disorders , insomnia , sleep disturbances , body mass index



Sleep

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Sleep is a natural state of bodily rest observed in humans and other animals. It is distinguished from quiet wakefulness by a decreased ability to react to stimuli, and it is more easily reversible than hibernation or coma. It is common to all mammals and birds, and is also seen in many reptiles, amphibians, and fish. In humans, other mammals, and a substantial majority of other animals that have been studied (such as some species of fish, birds, ants, and fruit flies), regular sleep is essential for survival.

The purposes and mechanisms of sleep are only partly clear and are the subject of intense research.

For more information about Sleep, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.


News tagged with sleep

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Link Between Poor Sleep and Poor Learning in Older Adults Investigated

Medicine & Health / Psychology & Psychiatry

created Dec 22, 2009 | popularity 4.5 / 5 (2) | comments 0

(PhysOrg.com) -- Researchers at the University of Massachusetts Amherst are trying to decode why aging prevents sleep from enhancing memory. Rebecca Spencer, assistant professor of psychology, says she is trying to isolate ...


Sleep and Cancer: Uncomfortable Bedfellows

Medicine & Health / Cancer

created Dec 15, 2009 | popularity 4.5 / 5 (2) | comments 0

(PhysOrg.com) -- Newly-diagnosed cancer patients face a number of life-long challenges, but a new study from the Duke Clinical Research Institute suggests that a lack of sleep may be one of the most persistent and disruptive. ...


Sleeping off childhood?

Medicine & Health / Health

created Dec 23, 2009 | popularity 4 / 5 (2) | comments 0

Are your 11- and 12-year-olds staying up later, then dozing off at school the next day? Parents and educators who notice poor sleeping patterns in their children should take note of new research from Tel Aviv University ― ...


Study shows dream-enacting behavior is common in healthy young adults

Medicine & Health / Health

created Dec 01, 2009 | popularity 3.5 / 5 (2) | comments 1

A study in the Dec.1 issue of the journal Sleep shows that dream-enacting behaviors are common in healthy young adults, and the prevalence of specific behaviors differs between men and women.


Sleep changes predict the onset of physical changes associated with puberty

Medicine & Health / Health

created Dec 01, 2009 | popularity 5 / 5 (1) | comments 0

A study in the Dec.1 issue of the journal Sleep suggests that changes in children's sleep patterns that typically occur between the ages of 11 and 12 years are evident before the physical changes associated with the onset ...