我测试睡意的方法是：如果我不能够连续不间断地读完一本书的一两页，我就要准备去睡觉了。

My sleepiness test is that if I couldn't read a book for more than a page or two without drifting off, I'm ready for bed.

youdao

我精疲力尽了，准备去睡觉了。

I am going to hit the sack, I am exhausted.

youdao

我筋疲力尽，准备去睡觉了。

I'm going to hit the sack, I'm exhausted.

youdao