I really want to take a nap. I feel very sleepy today.
What's the matter? Didn't you get enough sleep last night?
I fell asleep very late. It was almost two o'clock in the morning when I finally fell asleep.
Are you worried about something? Why couldn't you sleep?
You know how it is when you're in a strange country. Everything is new, and you get tired and nervous sometimes. Then you worry about your family, about conditions back home, about your courses, about your money, about everything. I tried to fall asleep but I just had too much on my mind.
Well, take it easy. Things will look better tomorrow. Maybe you should try exercising or a hot bath to help you relax.