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SSS 2011-03-07

时间:2011-04-27 03:40来源:互联网 提供网友:geologyforget   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Christie Nicholson. Got a minute?

The National Sleep Foundation released the results of its annual sleep poll today, where they surveyed more than 1,500 people between the ages of 13 and 64.

Here are some of the interesting findings: 43 percent of Americans say they rarely or never get a good night's sleep during the week.

Nearly everyone, 95 percent, use electronics (like TV, computer, or cell phone) within the hour just before bed. Researchers caution that the use of such devices are particularly harmful to the sleep-onset process, since the artificial light can suppress the release of melatonin which is our sleep hormone1.

More than half of teenagers report consuming and producing text messages every night just before bed compared to only 15 percent of those in their 30s and 5 percent of the baby boomers.

And it's these teenagers who are the sleepiest of all, with the baby boomers getting the most sleep. So scientists caution since most teens get two hours less sleep than they're recommended 9 hours, maybe an environment with fewer OMGs and ROFLs might encourage a calm wind down before bed.

For Scientific American's 60-Second Science, I'm Christie Nicholson.


点击收听单词发音收听单词发音  

1 hormone uyky3     
n.荷尔蒙,激素,内分泌
参考例句:
  • Hormone implants are used as growth boosters.激素植入物被用作生长辅助剂。
  • This hormone interacts closely with other hormones in the body.这种荷尔蒙与体內其他荷尔蒙紧密地相互作用。
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