Back when I got a standing desk two years ago, it took me about two weeks to adjust, standing about 5 hr a day. It was mostly my feet that started to hurt back

Back when I got a standing desk two years ago, it took me about two weeks to adjust, standing about 5 hr a day. It was mostly my feet that started to hurt back then, and I don't have a particularly strong back or good posture. Nowadays I'm regularly on my feet for about 10 hours a day and just dont think about it that much. I do often walk around the office and constantly shift my weight around, which helps.