Answer:
When I live I cry if you don't kill me I'll die.
Sometimes I fly as fast as the speed of light. Sometime I crawl as slow as a snail. Unknown until I am measured but you will certainly miss me when Iām gone.
I am between earth and heaven. What am I?
I am black of eye and bright of hair. I fast into the ground and follow my lord as he races around the world. What am I?
Find me on body builders or in the drink aisle.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.