在线词典,在线翻译

缺少睡眠为什么会容易长胖?

所属:生活杂谈 来源:www.rd.com/ 阅读:3550 次 评论:0 条 [我要评论]  [+我要收藏]

小编摘要:缺少睡眠不仅能使你隔天情绪低落,而且会危及你的腰围。

导读:美国肥胖营养研究中心的一项调查结果表明,缺少睡眠的人较睡眠充足的人更容易长胖。睡眠不足会使人体新陈代谢减慢,从而引发皮质醇激素的分泌。这种激素会激发食欲,让人不知不觉摄取更多的热量。此外,身体也会分泌胃饿饥素,使胃部经常保持一种饥饿的感觉。由此看来,熬夜对于减肥者来说,是一种得不偿失的行为。




Sleepless nights don’t just ruin your mood the next day—they could also damage your waistline. According to new research in the August issue of the American Journal of Clinical Nutrition, sleep deprivation can cause people to pack on extra pounds.

Researchers at the New York Obesity Nutrition Research Center at St. Luke’s-Roosevelt Hospital found that sleep-deprived people seem to burn the same number of calories as the well-rested, but they consume about 300 more calories a day. Given that it takes just 3,500 calories to add a pound to your body, those calories can quickly turn into extra weight.

But there are several other reasons that sleep loss could lead to weight gain, says sleep disorder specialist Michael Breus. When we get too little shut-eye, our metabolism slows down to conserve energy. That slowdown triggers the release of the hormone cortisol, which increases appetite. Your body thinks it needs more energy, so it asks for more food.

In a vicious cycle, sleep loss also causes our bodies to release more ghrelin, another hormone that signals hunger, and less leptin, the hormone that tells your stomach that it’s full. With your hormones off-kilter, your body wants more food and lacks the sensitivity to know when to stop eating. Not to mention that being awake more hours gives you more time to snack.

“The later you’re up at night, the greater the likelihood that you’re going to eat,” Breus says. And “you’re more likely to eat high-fat, high-carb foods.”

One other contributing factor to such weight gain is that the body burns the most calories during REM sleep, a deeply restful phase. And less sleep means less time in REM.

For optimal health, experts say you should try to get 7.5 hours of sleep a night. If you have trouble sleeping, stick to a nightly routine, exercise during the day, banish worries to a journal, and keep pre-bedtime activities relaxing.


正在加载单词列表...
6
2012-03-19 12:56 编辑:tinna_mm
分享到:
关注海词微博:
发表评论:
表达一些您的想法吧!已有0条评论>>
登录,再发表评论
文明上网,理性发言!
您可能还感兴趣的文章:
  • [社会热点]近期地震频繁,专家安抚2012情绪

    Seismic activity on the Chinese mainland will remain at an average level despite a recent spate of disastrous earthquakes worldwide, the China Earthquake Administration said. So f
  • [生活杂谈]情绪的色彩

    Are you in a gray mood today? How about a blue funk? Maybe you're seeing red, because you're green with jealousy. The colors we use to describe emotions may be more useful than you
>>精华推荐阅读
热门评论文章