Several articles have come out recently talking about the dangers of sitting. This one (long, but read until the end!) talks about famous old dead people who have had a standing desk and concludes with the health benefits from not sitting and examples of standing desks. This one is an infographic that I actually have posted up inside my standing desk. After reading them I decided that I must stop killing myself from sitting too much!
About a month ago I “built” a standing desk by taking out some shelves in my bookshelf and putting my computer in it. Standing all day was hard at first. I would get tired and my shins would hurt. But I found that if I walked around, it was almost like a rest from standing. I would also find myself focusing on projects intensely for about 20 minutes then taking a break, instead of my usual pace of working (which is highly erratic and not focused at all).
I have now adjusted to standing while working. I think the key is moving and not staying still. So I like the discomfort that the standing gives me which forces me to walk around or (very occasionally and for a short time) sit down.