I had a desk job for three years and couldn't stand it! I went back to my FE job where I could walk 3+ miles a day and do around 20 flights of stairs. Now 10 minutes round trip to the mailbox is it.Seven hours is a lot of standing! Last week I had to do about 3 hours of standing on 3 consecutive days (events for work) and my muscles were sore afterwards - shows you how much time I normally spend sitting at work! (I have a desk job).