Why Do We Sleep?

20 Why Do We Sleep? Susan doesn’t want to sleep. She says, I'm not sleepy. " Mom tells her, “ Just lie on your bed, close your eyes. You will start to feel sleepy soon. " But Susan still has a question, “ Why do I have to sleep?" Mom says, " You need to sleep to rest your body and mind. That way you will be strong and healthy. "

Lights out.