Answer:
Do you know what you can hold without ever touching it?
I do not breathe, but I run and jump. I do not eat, but I swim and stretch. I do not drink, but I sleep and stand. I do not think, but I grow and play. I do not see, but you see me everyday.
Through its wounds, water does run. It once held many but now has none. What is it?
I am black when I am clean and white when I am dirty?
It can pierce the best armor and make swords crumble with a rub, yet for all its power It can't harm a wooden club.
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?