►The best food for the brain is sleep, so you’ll need a lot of sleep during exam times. When you’re tired you will find it difficult to concentrate and learn.

大脑最好的食物就是睡眠，所以在你备考阶段你一定要保证你获得足够的睡眠。当你累的时候，你会发现你很难集中精力学习。

►So, how much sleep do you need? Well, when you’ve had the right amount of sleep you don’t feel tired, not too much and not too little. Most teenagers need between 8 and 9 hours sleep a night.

那么，你到底需要多少睡眠呢？这么说吧，如果你有适量的睡眠时间的话，你就不会感到累了，不用太多，也不能太少的量。大多数青少年每天需要8—9小时的睡眠时间。

►Try and get good quality sleep. So, don’t sleep with your books all over your bed or with lights, music or the computer on. For the best sleep, make sure your room is quiet, comfortable and dark.

尽量获得高质量的睡眠。所以不要把书堆得床上到处都是就睡着了，也不要开着灯、音乐或者是电脑就睡觉。为了获得最佳的睡眠，要确保你的房间是安静、舒适和黑暗的。

►If you stay up late studying and don’t get enough sleep, you may need a‘power nap’ in the afternoon. A short sleep of 30 minutes may give you some energy before you start revising, but keep it short – you don’t want to spend all afternoon in bed!

如果你熬夜学习而没获得充足的睡眠，你也许需要在下午的时候来个“有效的午睡”。在你开始复习的时候，打个30分钟的盹给你获得足够的能量，但是要确保时间要短——你也不想把整个下午的时间都在床上渡过！