I was at a startup from Jan-July '06 and we had several kicking around. I switched to the ball there at the startup and learned to love it. Shortly after, I rep

I was at a startup from Jan-July '06 and we had several kicking around. I switched to the ball there at the startup and learned to love it. Shortly after, I replaced my home computer chair with a ball as well. Like anything, they can be misused, and it's a matter of personal preference. I also have a laptop that doesn't fit very well on my computer desk, so when I'm on it, I'm usually lounging in a recliner or on the sofa at home. The thing I love most about the ball is that I can get up, roll it back a bit, sit back down on it, then do a full-body arched-back stretch, then roll back up onto the ball, scoot it up to the desk, and keep working. I find myself doing that at least once an hour, and it always brings a boost. At my office (no balls allowed... heh) I end up having to run up and down a flight of stairs or do something else to get that boost. It takes a lot less time with an exercise ball, and I can keep focused.