By choice, I stand 8 hours a day. I have a raised desk & no desk chair. ( I am only semi-retired, so have multiple monitors on my desk). I splurged and bought a Revolution Focus Balance Board to use while at computer. It is like standing on a see-saw. I just got it and am on it now. Wow! Love it. My partner tried, he also uses stand up desk, and immediately ordered one. For anyone who is stuck at desk for many hours, it is a must. Of course, you must work from high work surface. You can easily rig boxes to put keyboard & mouse on without expense of special desk. Really, I've done that. If I break my hip, I will say did skiing or climbing. LOL.