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Article: Sleep
- Article from:
- Complete Human Diseases and Conditions
CopyrightCOPYRIGHT 2008 Gale Group. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Sleep
Asleep for Twenty-Five Years
Why Do People Need to Sleep?
What Are the Stages of Sleep?
What Makes a Person Fall Asleep?
What Are Sleep Disorders?
Resources
Sleep is a state marked by a lowered level of consciousness, decreased movement of the body
’
s muscles, and slowing of
metabolism*
.
* metabolism
- (me-TAB-o-liz-um) includes the chemical processes in the body that convert foods into the energy needed for body functions.
KEYWORDS
for searching the Internet and other reference sources
Circadian rhythm
Melatonin
Sleep disorders
Sleep medicine
Sleep research
Asleep for Twenty-Five Years
While it might sound like the title of a new science fiction ...