I don't like running. The last time I ran voluntarily was 20 years ago on the high school track team. It was fun at the time only because many of my friends were on the team, but I had to quit after my sophomore year because of arthritis in my knees. A few years passed and I swore off running forever after realizing that it's hard and painful and just about the worst way I could think of to get exercise. I was never any good at it anyway (although, with practice, I might have been a decent sprinter -- my coach always admired my high sprint recovery, which means that I naturally lift each foot up quite high when picking it up and moving it forward to take the next step).
Tonight at the gym I realized that I needed to run. It seemed preposterous, but I couldn't think of a good reason not to try so I tentatively increased the speed of the treadmill and waited for sharp knee pain. None came, so I jogged for four minutes, walked for four minutes, jogged for four minutes, etc. I seem to recall reading somewhere that these jogging/walking intervals provide some kind of health benefit. I think I did it six times, which sure beat running for 24 consecutive minutes. The expected knee pain never came -- a phenomenon that can only be explained by the brisk 15-minute walk that served as a warm-up and my recent eliptical-trainering-like-it's-going-out-of-style activity. It didn't hurt today, but when I think back to my track and field days I recall that the first week of practice = serious shin splints, and I fear what my legs will feel like tomorrow.
In hindsight, I think my crazy behavior can be explained by gender politics. No more than 10% of the women who use the treadmills at my gym actually run on them -- the vast majority of users are walkers. Men, on the other hand, seem to run on the treadmills at least 80% of the time. I can't stand it when my team gets shown up like that.

