阅读难度：

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）

研究：缺觉或致肥胖

       据英国路透社报道，研究表明缺觉会使人白天乏累，减缓新陈代谢，从而降低人体热量的消耗。

       这项研究的发起人、瑞典乌普萨拉大学的克里斯蒂安·本尼迪克特称，睡眠充足则有利于保持好身材。

       英国睡眠委员会建议成年人每天应睡足7-9个小时。

(China.org.cn May 24, 2011)