I feel the same way. Working out hurts me. I’m surrounded by people 10 years or more younger than me who’ve always been more fit. I’m always comparing myself to them and I never measure up. I’m trying to figure out what kind of fitness will work for me. Walking is good. Some Wii activities are good. We’ll see.
I feel the same way about other things, like research or other work-related stuff. I think I felt so out of place in my previous job because I was either surrounded by people who thought research wasn’t “real” work and therefore I wasn’t doing enough, or people who thought the rest (most) of what I did wasn’t real work, so I wasn’t doing enough. I felt inadequate all the time. Now, I do whatever kind of work feels like enough and it’s using as much or more than most people do.
Now if I can just work on the fitness thing . . .