Bought this to help with balance, obviously. It does take a bit of work to master balancing on this board, but that's not the board's fault! Good size to get both feet on nicely.
I love this chair! It helps with my slouching and my leg-crossing, both of which I am always working to stop. The only downsides to this chair is that I have to re-inflate it every few months, and the breaks on the wheels are easily tapped, which is irritating, and one of them has already broken off (likely the fault of a student, but anyway). The final thing that I found problematic was that this particular chair was too short for my desk, and I had to purchase chair leg extenders from http://www.gaiam.com/product/classic-balance-ball-chair-leg-extenders/95-1561.html
I am 76 years old and a health nut and exercise enthusiast, always looking for products that improve my health and physicality. This chair assists me with my posture and core conditioning. Love it.
I injured my leg and could not exercise for an extended time. This machine really helped my circulation and balance. It's heavy and not easy to move around. Once I was ready to advance, I gave it to my neighbor with a mobility issue and they saw marked improvement, as well.
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