A few weeks ago, someone asked me how I could run for so long... "Don't you have to stop?" Ever since, I've been worrying about it. I've got many long runs to look forward to this summer for marathon training. I don't want to be uncomfortable, embarrassed, anxious, etc. That can't be good for my training.
My 15-miler was a huge victory for me. I still can't believe I could run that long. I did have to stop once and I think it was more of a self-fulfilling prophecy. Also, a bathroom happened to be conveniently located along the run.
I guess I figured, "Why not?" ;-)