We have starting using a standing desk at the library instead of the traditional big desk. I have two totally contradictory opinions on it. 1) It seems to aggravate my sciatic, and I'm in pain much of the time. Will see my physician soon now that my physical therapy for bursitis appears to be nearing an end; 2) I actually like it. I've spent most of my career standing (actually moving) and feel that it is good for my health. I don't "stand" at the desk unless I'm actually helping a customer make out a card or a similar activity. There's plenty to do, and I keep moving, which is also a way to get a modest amount of exercise -- it's tiring to keep moving, but I've been doing it for many, many years. I would not want to stand at the desk as some of my colleagues do. I think that could be tiring and possibly detrimental to one's legs and back. There is absolutely nothing in my makeup that would be comfortable being immobile for long periods.