I'm starting to wonder if people don't experience fatigue and exercise differently. I wonder what it would be like to perceive the basic results of exercise -- increased heart and breathing rate, some muscle usage but not what I would call pain -- not as joy and the epitomization of being alive, but as distress and a feeling of imminent death. I'm exaggerating both perceptions of course, but I meet people who seem to become really distressed at a rise in breathing rate that I think is normal and desirable. I don't think endorphin production differences explain it, because I am generally too lazy to actually push to the point of getting a runner's high any more.
Yep. It's a first world thing, I think. We don't have a good healthy understanding of what our bodies can and should do. For cringe-worthy personal example, I have a bad relationship with food. Bit of an oral fixation. (nail biter, gum chewer, food-obsessive). Consequently, it is uncommon that I am hungry. When I do get hungry, I wonder if I might actually be going to throw up. Just not used the feeling, somewhat uncomfortable, must be bad. I'm guessing some people are the same with exercise. We've optimized for finding the path of least resistance, and in a world of unlimited choice and luxury, exercise is hard.
It was a beautiful morning, and I rode in knowing full well I'll be riding in the rain all the way home. When it's a crappy wet morning that will turn into a beautiful day, it's a lot harder to commit to an hour on the bike first thing.