Other people have said, but I want to say it again; the chair. Oh yes, the chair. But also what goes around it; if you get that wrong, you can have the perfect

Other people have said, but I want to say it again; the chair. Oh yes, the chair. But also what goes around it; if you get that wrong, you can have the perfect chair and not benefit from it. The chair is perhaps the starting point, but it's only one part of the whole system. If where your feet go isn't comfortable, you'll sit on the world's greatest chair wrong. If the desk you sit at places the keyboard at a position that's not good, you'll stretch or compress your arms, or maybe the chair's armrests are in the way of your elbows or forearms and you're under constant tension all day as you work. My feet don't rest on the floor; the desk has a little platform under it about five centimetres above the floor; that's pretty good for me. The desk has a sliding horizontal keyboard plate that puts the keyboard about 5cm above my thighs. When typing, I am in a little enclosure formed by the chair and sliding keyboard-shelf, which means my elbows are literally at the side of my hips and the base of my hands rest on the very top of my thighs. I can feel that my arms are very much in a relaxed state, and the natural curl this gives my hands is almost the same shape as they are when typing. That's a lot of text about my specifics, but it's to push my point. It's not just having a great chair, a great desk, a great footrest (if that's your thing; I like my legs slightly extended, hence the raised plate to rest them on - some people like their feet placed firm to the floor). It's the whole combined setup allowing you to tune to your own human factors and ergonomics. A cheap chair and cheap desk that allow you to sit and work just right for yourself is far better than an expensive combination that puts you under constant tension or stretch. It's better to spend the time to find a great setup for yourself than big money on items that individually are excellent but won't combine to be just right for you.