Answer:
Something you carry while singing.
Turns us on our backs, and open up our stomachs. You will be the wisest of men though at start a lummox.
What is it that leaps and runs and yet, has no feet?
Come up and we go, Go down and we stay.
What gets broken without being hold?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?