Answer:
Up on high I wave away but not a word can I say.
Everyone has it and no one can lose it, what is it?
What is the heart of many risks, has a heart, but is not a living being?
A seed am I, three letters make my name. Take away two and I still sound the same.
Bury deep, Pile on stones, My mind will always Dig up them bones
You use it between your head and your toes, the more it works the thinner it grows.