<正>We spend about one-third of our lives asleep.This may sound like a lot of time,but it is not wasted.我们一生中有三分之一的时间在睡觉,这听起来可能是很多时间,但是这些时间并没有浪费。Our bodies need sleep to stay healthy.Not getting enough sleep,or as we sometimes say shut-eye,can make us sick.我们的身体需要睡眠才能保持健康。缺乏充足的睡眠会让我们生病。