Fly!

I made some dreams when I was slept deeply. And the dream that I remember is of I fly. In the dream, I can across the river, through the forest, run on the road, jump to the hill, and sometimes I stand on the top of a tree. I just open my arms and fly in the sky. And then I fallen from the top of the tree to the ground. I realize that I opened my eyes when I have shaken in this fancy. I enjoy this kind of feeling even I know that it's only a dream. I will run some steps in order to help to fly into sky; and sometimes, I felt tired after flied in the sleep. I even doubt that I am a bird. I was dropped again last night, but I dropped from a balcony. I can't remember whose house. I know I was dropped from the second this time. It's not hurt, but I just woke up scarely.
Did you make this kind of dream before? Share your experience.
People said that I might need the fresh air; or leave this city to take a relax. So I made this kind of dream. Do you think it's real? Someone said you just dream when you want to be. Is it true?