What Am I Riddles

Question: I wear a red coat and have a stone in my throat.

What am I?

Question: Sometimes I'm high and sometimes low,
and I creep between your toes.
My orders come from the sky,
I make men fall and rise.

What am I?

Question: What gets longer when pulled,fits between breasts, slides neatly into a hole,has choked people when used improperly,and works best when jerked?

Question: You can only keep it once you give it to somebody.

What is it?

Question: Light hides me and darkness kills me.

What am I?