My longest held day job involved a lot of standing. I learned how to buy really good footwear. I learned to take the time to remove the platform that the short guy on the other shift had put in place (he called it the Battle Flat). I had a few discomforts over the years, but overall I was ok with the idea of standing for hours at a time.
Now I am feeling kind of uncomfortable sitting at the computer for long periods of time. This is the second time in my blogging career that I have contemplated devising a standing workstation. If I actually follow through on it this time I will blog a bit about how it works out.