Sizing and Sitting

You need to buy the correct size ball for your height. The diameter of the ball makes all the difference ? size does matter. If you are close to the cut off point between sizes, try testing out both sizes and see which works best for you. Here are basic guidelines to follow:

4’11” to 5’4″ height: 55 cm ball
5’4″ to 5’11” height: 65 cm ball
5’11” to 6′ 7″ height: 75 cm ball

An exercise ball, when size properly, makes for an active chair when sitting at a desk. You should be able to sit with your knees at a right angle and your thighs parallel to the ground. Aside from keeping your core engaged, replacing your seat with a ball will help your posture.

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