[gavinray]

You have to find some sort of exercise/movement that you both enjoy (or at least, don't hate), and doesn't cause you physical discomfort.

Otherwise, you'll never stick with it.

I hate jogging, I have forced myself to do daily jogging for several month periods, but I never stick with it.

For me, incline treadmill at maximum incline and a moderate pace gets my heart-rate up and doesn't feel nearly as awful.

[taeric]

My trick was to find a way to obligate myself to finish. Biking to work was a huge win for my fitness. Even on days I didn't really want to bike a few more miles at the end of the day, I still had to get home.

For my kids, I'm trying to convince them that a lot of the things they find uncomfortable are things they just aren't used to. Ergonomics have fooled a lot people into thinking "feels right" is the initial state of something, I think? You still have to train yourself to get used to a lot of things.