I have a motorized sit/stand desk, as is the norm here in Denmark (and Scandinavia in general probably). I have used these for five-six years. I tend to stand

I have a motorized sit/stand desk, as is the norm here in Denmark (and Scandinavia in general probably). I have used these for five-six years. I tend to stand around half the time at work, which comes to something like three-four hours on the average day. If I have just done a long run or bike ride I might sit for the entire day as my legs and back will already be fatigued. The thing that makes me sit is aching feet. I suppose standing for a long time makes bodily fluids assemble in the lower legs, so after a while the feet start to feel a bit swollen and the heels get sore from having all the weight on them. This is alleviated by switching around from one leg to the other, but after a couple of hours I need to sit for a while (this is the reason a desk must be stand OR sit and not fixed to standing-only - you need the ability to adjust according to the situation.)