In all honesty, it's still exercise! I prefer running outside because it's not as boring and I think it's a bit more of a workout since you have hills, wind and the like but treadmills are fine.
jjsole: you should see the whole tape. I cut out the really bad sections. My mother likes to cheer while she's taping and forgets to aim the camera, so a typical race video has a few shots of me running interspersed with trees, the ground, the sky, random people, the lens cover and more.
grohl, glad to hear your legs are better.
RKS: I watched the Philly marathon last year and saw the Kenyans come through the 6-mile mark. They looked like they were jogging but they came through in under 30 minutes!
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