Answer:
I run through hills. I veer around mountains. I leap over rivers and crawl through the forests. Step out your door to find me. What am I?
Flat as a leaf, round as a ring; have two eyes, can't see a thing. What am I?
I am a lunch money thief
Find me on body builders or in the drink aisle. What am I?
No matter how little or how much you use me, you change me every month.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.