Answer:
I am quick when Iām thin. I am slow when Iām fat. Wind is my worst nightmare.
I go up but never come down. What am I?
What goes through a door but never goes in and never comes out?
You kick me, you punch me, and you beat me up all class. When you leave, you don't even say thanks for allowing you to beat me up. What am I?
I'm simple for a few people, but hard for them to hear. I live inside of secrets and bring people's worst fears. What am I?
No matter how little or how much you use me, you change me every month.