I'm actually sitting on a exercise/birthing ball right now at my home computer desk while I type this :). It's easier on my bum and base of my spine and I can bounce while I type, which gently stimulates lymphatic fluid flow and drainage as an added benefit (the same motion as rebounding on a mini trampoline). Apparently it also helps with correcting your posture and takes pressure off of your spine because you're not planted on a solid chair. It feels a a lot comfier to me, and keeps me mindful of not slouching, so I'm all for it. :)