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Human sleep patterns were once controlled by circadian rhythms governed by day and night. But now, according to a new study, almost everyone in the United States has a sleep pattern that's controlled by when they watch TV. A massive survey on time management conducted by the U.S. Department of Labor Statistics shows that most people watch TV between 11 - 11:15, dropping off to sleep when they switch the tube off. The hour when nighttime falls affects this pattern very little. Human sleep patterns are therefore more malleable than believed, and it's possible people could change them as easily as changing channels. More »
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