Coffee doesn't just keep you awake, it may literally make you smarter as well. The active ingredient in coffee is caffeine, which is a stimulant and the most commonly consumed psychoactive substance in the world. Many controlled trials have examined the effects of caffeine on the brain, demonstrating that caffeine can improve mood, reaction time, memory, vigilance and general cognitive function. 翻译:不仅提神,还能让你更聪明。咖啡里面的兴 奋成分是咖啡因,这是最常见的兴奋剂。很 多实验表明咖啡因对大脑的有着积极的作 用,能改善心情,减少反应时间,提升记忆 力,提高警觉以及认知功能。