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Too Much Sleep Increases Fatigue and Shortens Lifespan
pine Webmaster of Pineapple
2009/11/02 23:23
508 topics published
(Central News Agency, Taipei, October 31, 2009)

Daylight Saving Time in the United States will end at 2:00 a.m. Eastern Time on November 1 this year. Americans will need to set their clocks back by one hour, meaning they can sleep an extra hour this Sunday morning.

While this may sound like a good thing, U.S. experts point out that extended sleep can sometimes leave people feeling even more tired upon waking.

CNN reported on the 30th that Daniel Kripke, director of the Scripps Clinic Sleep Center in La Jolla, California, said, "Many people will tell you that sleeping too much on weekends results in poorer sleep quality."

He added, "Sleeping a lot on weekends doesn’t necessarily make you feel more refreshed." However, he noted that the reason for this remains unclear.

Many professionals sleep about five hours a day from Monday to Friday and then try to catch up on weekends, sleeping anywhere from eight to twelve hours. But sometimes, after such long sleeps, they wake up feeling too exhausted to move.

Lisa Shives, medical director of Northshore Sleep Medicine in Evanston, Illinois, explained that this is called "sleep drunkenness," a state of being half-asleep and half-awake.

In one past case, a patient experiencing sleep drunkenness was rushed to the emergency room because his wife mistakenly thought he was having a stroke.

Experts say that occasionally oversleeping won’t severely impact health, but if it becomes a regular habit, it may signal underlying health issues and could even shorten lifespan.

Michael Breus, clinical director of the sleep division at Southwest Spine and Sports in Scottsdale, Arizona, stated, "At least two epidemiological studies show that sleeping less than five hours or more than ten hours increases mortality risk."

A 2007 Finnish study found that sleeping more than eight hours raised the risk of death by about 20%. That same year, a British study also found increased risks for those who slept less than five hours or more than eight hours.

Another study indicated that people who regularly sleep more than eight hours at night also face a higher risk of stroke. (Translator: Jiang Tianqing, Central News Agency) 981031

Source: http:/ / www. cna. com. tw/ Search……oDetail. aspx? id=200911010002
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