网上英语口语课程

　　最新发布的一项研究证明，小睡的威力强过喝咖啡甚至是晚上多睡一会儿。这实际上是第一次让三种对抗人们普遍经历过的下午犯困的方法同台竞技。事实上，下午犯困是一天之中人体生理节律导致的非常正常的生理反应。

　　Just because you feel sleepy at some point in the afternoon doesn't actually mean you're sleep deprived. About eight hours after you wake up, the body's temperature dips a little, triggering that oh-so-annoying drowsiness after lunch and smack dab in the middle of your attempts to focus and get more done in the late afternoon.

　　其实下午犯困并不是意味着你缺觉。大概在醒后八小时，身体的体温会出现小幅回落，这会导致午餐之后让人烦恼的瞌睡，并且恰好这时你还想集中精力，在下午多做点事情。