Upper body strength. Don't forget your ass, too- if you don't want to strain your back, you'll probably have to use some of that, too. I know all about pushing things at this point. I'd probably find a push mower rediculously easy now, but when we had one, I didn't like doing it either. 'Course, now my lawn gets mowed by other people that I don't know, but anyways.

Good luck with the job search! May your interviews come quickly and easily, and may you find something to love about whatever job you get.

Ttfn, gotta go to work. *g*