Back when we worked in an office I had a stand up desk, which I loved.
Then the world ended and we started working from home, and I missed my stand up desk, and then we were told we were walking from home forever, and I missed my stand up desk even more.
I tried a couple of different chairs and even invested in a decent office type chair, but just couldn't get along with sitting down all day again, having got so used to standing up.
So in the end I asked work if I could have one of the stand up desks from the office and they said yes, so I binned off my standard desk, and am now back at a stand up desk, which is sooooooo much nicer than being sat down all day. (They also gave me a bigger model than the one I'd had back in the office, so that's a win.)
Would really recommended giving one a go if you've never tried it, makes a massive difference to my comfort and also my energy levels in a weird sort of way, as there's more 'movement' involved throughout the day. I was seriously getting fed up with being sat down all day, it's just not what human beings were built for, so uncomfortable.
The desk can be moved up and down with a couple of little buttons, but it's been in the fully erect (fnaar) position ever since I took delivery of it. The chair underneath it is just for display purposes really.