What Am I Riddles

Question: I'm heavy but not backwards.

What am I?

Question: The shorter I am, the bigger I am.

What am I?

Question: I am a cold man without a soul. If there is warmth in me, it slowly will kill me. What am I?

Question: You use me from your head to your toes,
the more I work the thinner I grow.

What am I?

Question: Its pure body is destroyed after it meets Miss Gold. It can get shorter when it gets older but wind will extinguish it. It love to glow. Breath is its foe. What is it?