How to choose the right size exercise ball

If you’re purchasing an exercise ball…

Your height is used to determine the appropriate size.

Here is a general guide:

• Use a 45 cm ball if you are less than 5’0″ tall..
• Use a 55 cm ball if you are 5’0” – 5’6” tall.
• Use a 65 cm ball if you are 5’7” – 6’1” tall.
• Use a 75 cm ball if you are 6’2” – 6’8” tall.
• Use a 85 cm ball if you are taller than 6’8”.

Manufacturers will typically list the recommended ball size for your height on the product box or on their website.

If you’re using an exercise ball at the gym…

Sit up tall on the ball with your feet flat on the floor. Choose a ball that allows you to sit with:

• a 90 degree angle (or slightly greater) in your knees.
• a 90 degree angle (or slightly greater) in your hips.

In this position, your thighs will be parallel to the ground or your knees will be slightly lower than your hips.

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