Squigly Squigly's Brain Teasers

Question:

When I'm young I'm tall
When I'm old I'm short
When I'm alive I glow
Because of your breath I die

What am I?

Answer:

A candle.

Try another Brain Teaser:

A woman walks into a restaurant and asks the manager for a glass of water. The manager aims a gun at her, the woman was pleased, said thank you and left. Why?