每天工作和学习的压力致使我们总是提不起精神来做事和学习，你需要用咖啡来刺激下大脑。

　　咖啡除了我们众所周知的醒神、醒脑作用以外，还有一个不太为人所知的小秘密哦!那就是咖啡能够帮助我们提高自身语言提取能力，这一点在英语考试的改错和语法上效用相当明显哦!

　　You probably count on your daily jolt of caffeine to wake up your brain and stay sharp all day long. But downing that coffee, tea, cola, or chocolate bar may be giving you a leg upin another unexpected way: It can improve your proofreading skills, according to a new study.

　　In the study, published in the Journal of Experimental Psychology: Applied, researchers asked 36 college students who consumed low levels of caffeine -- about a half-cup of coffee a day -- to do a "language task." The students were given 5 minutes to read a one-page news story, and needed to identify and correct as many spelling and grammatical mistakes as they found in that time.

　　Forty-five minutes before taking the proofreading test, students were randomly given a capsule containing one of four doses of caffeine: none, 100 milligrams, 200 milligrams , or 400 milligrams.

　　In a second study, researchers repeated the same experiment with 38 college students who consumed higher levels of caffeine each day. The java junkies typically had at least 300 milligrams of caffeine daily.

　　The low-caffeine crowd was best at finding and correcting these grammatical goofs at 200 milligrams of caffeine. But it took more in the highly caffeinated -- 400 milligrams -- to achieve the highest detection rates.

　　Interestingly, caffeine didn't affect the students' skill at finding and correcting misspelled words. And it had no effect on noticing mistakes in words that sound alike, such as weather and whether or seams and seems.

　　"Individuals who habitually consume caffeine on a daily basis are less likely to benefit from caffeine's performance advantages without upping the dose," Brunye says.