About a month ago I told everyone I knew, including my readers, that I was running a Halloween 5K. The very next day I went out and ran 2 miles. The day after that I ran another 2 miles. Then my back was bothering me, so I stopped running and I did nothing. I didn't walk, or bike or go to an exercise class. Because damn it all, change is hard. I woke up this morning and realized that next Saturday was the 5k. A big part of me wanted to just call it off. Hey, I didn't train--can't do ...