I`m certainly not going to hit the hard stuff you guys are talking about, but I may consider attempting to just get a 2/3 mile jog in several times a week this spring and see where it takes me. Who knows.
Really great post! It is important to point out that fitness, like hunting, is an individual pursuit. Nobody should compare themselves to others unless they are doing so for inspiration/motivation.
I think there are two fast lanes to fitness failure. One is to give up on yourself before you even get started. The second is to set unrealistic goals that lead to injury or despair.
The only thing I might offer is that if you are troubled by bad knees/ankles, jogging may prove to be too repetitive. I like hills b/c they up the intensity and allow you to get the same results while putting fewer miles on your body. If you have a challenging hill in your neighborhood you could hike up and down it for say 20 min., 3 times a week. Trying to increase the number of assents each time.