[midnightmonster]

Coding while walking works fine for me. As far as the mechanics, it's not hard to walk and type at the same time. 2 mph isn't very fast. I can't draw with the mouse while walking, so the occasional graphics work has to be done standing.

Mentally, the consistent motion sometimes helps with flow, sometimes not. It's hard to tell, but switching between walking and standing seems to be enough for me to support the various required mental states. I've been doing this for about two months now, and while I have no hard data, I've done what I consider to be some of my best and most creative work ever in the last two weeks, so worst-case the walking isn't too great an obstacle to my coding.

And this is indeed a huge improvement for my back over both sitting and standing.