The repetitive stress thing makes sense. As far as running experience, the most he ever did was about six miles on sundays to cut weight for wrestling (and it took forever, because he was tired and cutting) and so he usually hates to run. And he has running shoes, good ones I think, but forgets to wear them when he runs (which is typically 2-5 times a week, depending on the mood he's in). He does like to jog whenever he's in a foreign city, though, so see stuff. He doesn't stretch, that I know of, unless something hurts, like his back. He stretches that once or twice a day. He's not particularly serious, just likes being in decent shape.

He likes to run on asphalt because he goes a bit faster, and I like running in the ditch because it's softer and more challenging, depending on the grass height. It's pretty uneven, but would the cushioning offset that enough to make it worth his while to run in the ditch also?