Dave, Outside Magazine a while back did an article on standing desks sometime within the last two years. You might be interested in it. Here’s the link: https://www.outsideonline.com/1989241/how-long-should-i-be-standing-my-desk-every-day.
Bottom line to this, and this goes for every single one of us office weenies who sit and work most of the day: if you can make this a habit, you’ve got thing handled. Invest in a little kitchen timer. About every fifteen minutes, set it to off. When it does, GET UP AND MOVE. It makes no difference really what you do: walk, stretch, do pushups, a yoga move, stretch against a wall. The point its to MOVE. I work out of my home office and the entire house is basically a gym. There are pullup bars and weights and kettle balls and a stationary bike and a yoga mat. I wear workout clothing all day log so that it’s very easy for me to do something athletic. This is going to vary a great deal depending on your circumstances, but if you’ve got stairs near you (as I do) then taking a few minutes to do some laps does wonders. The body does not care what you do so much as you simply move. The idea behind the standing desk is to get us to move. Period.
My guess, and I am no doctor, is that your body gets sore simply because it wants movement. You’re also still very young. That’s a lively conversation between you and your physical form. My guess is that it’s asking for exercise. The way you described your situation sounds to me as though your back pain is simply feedback. The very good news is that this is easy to remedy. Good posture, taking breaks, which adds to our creativity, forcing blood to flow, stretching out- all these things will likely help out a lot. For what it’s worth, it’s always fun to try new stuff. Best of luck and again, thanks for your comments.