2. Alcohol is a double edged sword. Small amounts of alcohol can help you to fall asleep. But as the body metabolises the alcohol, sleep may become fragmented. Alcohol can dehydrate you, leaving you tired the next day.

　　饮酒是双刃剑。少量的酒精可以帮助你入睡。但是当身体开始新陈代谢酒精时，睡眠就会开始断断续续的。酒精会让你身体脱水，第二天就会变的很疲惫。