Riddle #1

Rules: OK, so I'm going to start a riddle chain. Like the quotes except I want you all to think. So you must read the riddle. You must attempt to figure out the riddle. Then you can comment what you thought it was or whether or not you got it correct. The answer to the riddle will be under my name in the comment section. Enjoy! (This is my personal favorite)

"My life can be measured in hours,

I serve by being devoured.

Thin, I am quick

Fat, I am slow

Wind is my foe"