I've always wondered how dancers do it, even though I'm athletic and more flexible than the average person (hypermobile in some joints actually). So that sounds like potentially useful reading. I've been standing at work for a few years, full time since I got an Ergotron Workfit a couple of years ago. It probably would be healthier to go for a balance of sitting and standing, but I think I do tend to be a little too rigid when sitting up. Additionally, I'm not much more than five feet tall and it seems like chairs and desks just aren't designed for people of that sort of stature. Even ones that are otherwise relatively ergonomic.

I wish it were easier to find a healthy balance without having to treat oneself as a longitudinal case study.