If you think you don’t have time for fitness; then it’s time you traded in your hard chair for a much softer, air filled disc. This “dyna disc” helps to activate your core as you sit at your desk. Who doesn’t want to burn more calories while you’re seated?
The Bottom Line
The J-Fit Fit Disc can be used as a seat cushion to give you the same benefits as using an exercise ball as a chair, without some of the drawbacks. It can also be used as the base for core, balance, and stretching exercises. It has one smooth side and one knobbly side to provide massage and more challenges for exercise. If using it as a seat cushion, build up your time on it gradually. If you experience any low back pain, consult your medical provider and consider not using it as a seat cushion (source).