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Just 25 percent of Americans get at least eight hours of rest on weekdays, and 60 percent of women say they often sleep poorly, according to the National Sleep Foundation.
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By Ginny Graves
updated 12:50 p.m. ET, Sun., March. 2, 2008
The brown bat sleeps for nearly 20 hours each day. Humans function best on a comparatively thrifty seven to nine, but more and more people are having trouble getting even that. The National Sleep Foundation recently found that just 25 percent of Americans get at least eight hours of rest on weekdays and that 60 percent
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