Because it is too tired to open the eyes while sleeping:P
February 10, 2012
2
2
1
to distracting sensory stimuli (lights, noises, etc.) can interfere with sleep, and closing your eyes visual input. also, closing your eyelids protects your eyes during sleep.
February 10, 2012
0
1
0
No one says that you have to. I like to close my eyes, otherwise I can't dream.
February 10, 2012
2
0
0
To prevent our dreams from escaping while we sleep.
February 10, 2012
0
0
0
We don't have to. There's this tough guy back in old China's history, Zhang Fei. And he doesn't.
February 10, 2012
0
0
Show more
Still haven’t found your answers?
Write down your questions and let the native speakers help you!