I know running is good exercise, and I assume it could be fun if I were any good at it, and I am sure that it's a good complement to cycling as a form of exercise. But I don't enjoy it at all. So, I don't do it.

I don't mind running when there's a point to it. Like as PART of a sport. I played high school tennis and didn't mind running around the court to chase down balls for hours. Running laps before or after practice, though, just seemed boring and pointless.

And cycling, of course, was fun even when I was in much worse shape and just starting to ride again w/ any regularity really since when I was a teenager.

Different strokes for different folks and all that good stuff...