In my case, it's psychological and irrational, but... The feeling when you run on a treadmill -> I'm just a person doing sport like anyone else. Running outside -> who am I running from? What am I running from? Too many watching eyes etc. I repeat, I know it's irrational, but that's the feeling, I can't help it. Maybe if I had a running companion... But then, again, due to my affinities and body type, I prefer swimming and the bicycle anyway. Running is not my style.

I live in the desert where it is often 110 F in the summers. I could drive to the mountains, but it is a couple of hours each way. The treadmill allows me to exercise in air-conditioned comfort.

I agree. Even though I'm in a wheelchair. Why work-out on a treadmill. You have the same boring view the whole time (or a tv). If you go out and running, you can see all different stuff, and in the woods the beautiful nature, over time all the seasons. So much better than a boring treadmill! Same with stationary bikes. Go bike outside! I usually hate gym-equipment. Let me work-out for real with my own body! It gives so much more satisfaction.

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