This site talks about how to pick the proper size of exercise ball and how to use one as a chair:

Tutorial:  How to use an exercise ball as a chair

I like a non-rolling exercise ball:

Gold’s Gym 65 cm Stay Ball for heights 5’3′ to 5’10”

Gold’s Gym 75 cm Stay Ball for heights 5’10” and above

Use at your own risk and begin by having someone “spot” you, so you don’t bonk your head.

 

This information is solely for informational purposes. IT IS NOT INTENDED TO PROVIDE MEDICAL ADVICE. The author nor publisher take responsibility for any possible consequences from any treatment, procedure, exercise, dietary modification, action or application of medication which results from reading or following the information contained in this information. The publication of this information does not constitute the practice of medicine, and this information does not replace the advice of your physician or other health care provider. Before undertaking any course of treatment, the reader must seek the advice of their physician or other health care provider.

October 18, 2017 Barnes Disclaimer