Marco Arment:

I got used to the standing desk after a few weeks. I don’t even notice it anymore. It’s easier to take coffee breaks because I’m already up — I just need to start walking. I burn more calories and strengthen my legs all day instead of sitting and getting fatter. No complaints on this one.

Great post from Marco, explaining in great detail how his own back problems motivated him to build his very own standing desk (out of Diet Coke cans!). He eventually moved to a new one, but remains convinced that standing is the way to go.