|The National Sleep Foundation recommends that adults get about seven to nine hours of sleep each night.|
A study shows sleep deprivation makes the day drag and appears to put a drag on metabolism too, causing the body to use less energy, Reuters reports.
The study suggests that getting plenty of sleep might prevent weight gain, said Christian Benedict of Uppsala University in Sweden, who led the study.
The National Sleep Foundation recommends that adults get about seven to nine hours of sleep each night. （点击路透社网站查看原文）
(China.org.cn May 24, 2011)