Amazon.com: Gaiam Classic Balance Ball Chair – Exercise Stability Yoga Ball Premium Ergonomic Chair for Home and Office Desk with Air Pump, Exercise Guide and Satisfaction Guarantee, Black: Sports & Outdoors Exercise Ball Chair – 65cm & 75cm Yoga Fitness Pilates Ball & Stability Base for Home Gym & Office – Resistance Bands, Workout Poster & Pump. Improves Balance, Core Strength & Posture – Men & Women I recently came across this article, which talks about using an exercise ball as your home or office chair. I have used an exercise ball as a chair before, and it was thoroughly enjoyable. Here are some of the benefits of using an exercise ball as your chair. Balance Ball Chairs. We’ve all felt it: A stiff lower back, tight shoulders, and a sore backside after sitting in a chair for hours at a time. What Health Experts Say About Exercise Balls as Chairs. The medical community, however, is at best inconclusive about the health benefits or disadvantages of using an exercise ball as an office chair. .