I've been using a saddle chair for about 7 years. I got it when I built my standup desk and wanted to alternate between standing and sitting, so I got a bar-hei

I've been using a saddle chair for about 7 years. I got it when I built my standup desk and wanted to alternate between standing and sitting, so I got a bar-height saddle chair (a little less common but it's made). That way whether I was standing or sitting, my eyes were at the same level w.r.t. to the screen. That worked great in a setting where I was going and coming to my desk frequently and having to show stuff to others (beats making people bend down to watch a screen). Since then, that desk has moved to my home office and a few months ago, I adapted it to a sitting position but for a desk height that sits midway between a regular sitting desk and a standup desk. I still enjoy it for all-day work. However, at the risk of stating the obvious, NO CHAIR is suitable for 8 hours sitting down. Regardless of your setup, getting up and taking breaks is necessary. Go for a little walk: both your back and your mind will thank you. Even better: do some stretching exercises during breaks—a goal I aspire to but haven't yet trained myself to do on a consistent basis.