I know that exercise (stability) balls come in different sizes, but how do I know which size is right for me?

They go by different names (fitball, Swiss ball, physioball or exercise ball to name a few), but stability balls are some of the best exercise tools around. You can do so many different exercises with them. But most importantly, a stability ball will help you develop your core (abs, lower back, oblique) muscles.

Balls come in different sizes, typically between 55-75 centimeters when inflated. The size you should purchase and use depends on your height.

If you're up to 5'7" tall, use a 55 cm ball.
If you're between 5’7" and 6’2", use 65 cm ball.
If you're taller than 6’2", use a 75 cm ball.

If you have an opportunity to try one that is fully inflated, you should be able to sit on it with your knees at a right angle (thighs parallel to the floor) while you feet are flat on the floor.

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I know that exercise (stability) balls come in different sizes, but how do I know which size is right for me?

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