Can gym balls burst?

Exercise balls, also known as fitness balls, stability balls, Swiss balls and yoga or Pilates balls, are designed to take a lot of punishment. But they’re not without their limits and, like any other plastic sphere inflated under pressure, when pushed past those limits an exercise ball can burst .

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What are exercise balls filled with?

An exercise ball is a ball constructed of soft elastic, typically in 5 diameters of 10-centimeter increments, from 35 centimeters (14 inches) to 85 centimeters (34 inches), and filled with air . The air pressure is changed by removing a valve stem and either filling with air or letting the ball deflate.

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