Answer:
You use me from your head to your toes. The more I work, the thinner I grow. What am I?
You hold my tail while I fish for you. What am I?
I shrink smaller every time I take a bath.
I have a small hill with seven holes.
I have roots that no one sees and I am taller than trees. Up, up I go, but never do I grow. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.