Answer:
Forward Iām heavy, but backwards Iām not.
If you have it, you want to share it. If you share it, you don't have it.
What relies on columns but isn't a house, and asks for help but can't speak itself?
What contains zero calories, but if you consume it, you will probably gain weight?
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.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.