I love running. I was never much for competitive sports, but I find that despite the cliche I truly have no greater rival besides myself. Especially since I got my iPod, running has been a fantastic release for me.
One half of it is physical, the striving to achieve a better time and just for general self improvement. The more important aspect for me is mental, allowing me to blow off some steam and keeping me sane in situations where I might otherwise lose it
Its a hands-on challenge that keeps me looking forward to my next run.