Standing Desks

I spent the whole day today working at a standing desk.
In my new office, we have a row of desks that have the ability to be used at regular desk height or at a raised height in order to use them while standing.
I spent the day standing up and it was great. My legs and back are a little tired but I felt more alert.
The final verdict will have to wait... I'll see how sore I feel after a week of this before I decide how much I like it.