拥有良好睡眠的益处 The benefits of a good night's sleep

It's 4 a. m. , and the big test is in eight hours,

followed by a piano recital.

You've been studying and playing for days, but you still don't feel ready for either.

So, what can you do?

Well, you can drink another cup of coffee

and spend the next few hours cramming and practicing,

but believe it or not,

you might be better off closing the books, putting away the music,

and going to sleep.

Sleep occupies nearly a third of our lives,