I am four weeks into my 12-week, half-marathon training program, and I have a confession to make: I am running better than I deserve to run. It simply does not make any sense, because I have yet to complete a full week's workout. Unless you consider rehearsing with the band for an hour and then leading worship for 30-40 minutes cross training, I have skipped the Sunday workout entirely, and I plan to continue that pattern. Actually, that was always my intention, so I don't feel so bad about leaving out that part of the weekly workout. But I had planned to live up to the schedule in every other way. That would mean three runs during the week (between three and five miles), and a long run on Saturday, which increases in distance by one mile a week, until I run a 12-miler the week before the race. That doesn't sound so hard, does it? Just three short runs in five days--that should be easy enough for a real runner . . . a dedicated runner. So far, I have only gotten...