During your exam period, you want your brain to work at its very best, so build in relaxation time before bed, avoid late night revision sessions and try to go to bed early so you get enough sleep.

在考试期间，你想让你的大脑处于最佳工作状态，所以在睡觉前安排放松时间，避免深夜复习，尽量早点睡觉，这样你就能得到足够的睡眠。

youdao

It's like having the bad sleep the night before an early flight, when you keep thinking you're going to oversleep and wake up panicked.

这种感觉就像赶早航班的前夜没睡好一样，你不断地想你要睡过头了，然后惊慌失措地醒来。

youdao

Those who slept for more than nine hours a night were 30 per cent more likely to die early, the research published in the journal Sleep found.

那些夜晚睡眠时间超过9小时的人早逝的可能性增加30%。研究刊登在《睡眠》周刊上。

youdao

Crash factors may include sleep loss, driving patterns -- early morning or late at night, for example, use of sedating medications, untreated or unrecognized sleep disorders, or consumption of alcohol.

CNN: How to combat drowsy driving