Answer:
Break it and it is better, immediately set and harder to break again
What has two hands, a round face, always runs, but stays in place?
What is long and slim, works in light. Has but one eye, and an awful bite?
Halo of water, tongue of wood. Skin of stone, long I've stood. My fingers short reach to the sky. Inside my heart men live and die.
What instrument can make any sound and be heart, but not touched or seen?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?