If running were always as simple as "just run" then it would be simple enough for all of us to "just run", right? Instead, we add GPS, PR's, Pace, VO MAX, Negative Splits, Tempo Runs, Fartleks, Hill Repeats, and even #$^%* Wreck Bags to the mix in order to keep running interesting. To put it another way, running apparently isn't crazy enough for some of us by itself, somehow "runners" need to make it completely over-the-top insane to keep motivated. WTH?