I'm not running away... I'm just running

Why do people run?

I don't even know why I started to run. I do remember when I was a teen rollerblading through Central Park I saw all the runners and felt bad for them. "Why would you do this? Why not put wheels on your feet instead?" Well, I still don't know the answer to this question - must be something in the chemistry. Anywho - if you pass me running, or I pass you at any time, show me the East Side gang sign for total respekt. Selekta!