Well, the Cocoa book was enticing, but I stuck to my guns and did my exercise. Glad I did, too -- I ran into one of my friends, a former co-worker of mine and we had a nice chat.
I did the mile loop, methodically this time -- alternating between jogging one segment and walking one segment. So I know for sure that I jogged a half mile and walked a half mile. Plus another maybe half mile (total) walking to the park as warm-up/cool-down. I feel great.