Our bodies (and minds) need a certain amount of sleep each night to function at their best. Although you might feel great on Monday after a weekend sleepfest, all that shuteye won't help your performance the rest of the week.
我们的身体和大脑每晚需要一定量的睡眠来保持它们白天处于最好的状态。尽管周末大睡特睡后，周一会感觉很好，但是这些睡眠不会使你整周都表现良好。
Here's why:
原因如下：
Our bodies can only catch up on sleep. They can't store extra sleep to help us function in the days ahead. If you sleep a lot over the weekend but go back to skimping on Monday night, your body won't be at its best on Tuesday. You may not notice you're tired, but you won't be operating at your peak — and if you continue this pattern all week, your body will be seriously dragging by Friday.
我们的身体只有在睡眠中才能得以恢复。它们不会储存足够的睡眠来帮助我们的身体在未来几天都运转良好。如果你周末睡觉很长时间，而周一晚上却睡眠不足的话，那么你的身体周二就不会处于最佳状态。你可能不会注意到你很疲惫，但是你的身体状态并没有处于巅峰状态---如果接下来的几天持续睡眠不足的话，那么到周五你就会被严重拖垮。
How will this affect you? Sleep fuels our daily activities, whether it's doing well on tests, competing in sports, mastering skateboard tricks, concentrating while driving, or improving video game skills. That's why experts recommend that teens get 8½ to more than 9 hours of sleep a night.
这怎么会影响到你呢？睡眠会为我们日常的活动补充能量，关系到你是否能在测试中，体育竞赛中，滑板技术的掌握中表现良好，也关系到你驾车时是否能够精力集中，这也是为什么专家建议青少年每晚睡眠8个半小时到9个多小时。
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