Step by step instructions, muscle activation and variants for the Stability Ball Crunch.
The stability ball crunch places you on an inflated exercise ball, arching your lower back over its surface to extend the starting position and increase the range of motion. The unstable surface activates additional stabilising muscles throughout the core compared to a floor crunch.
Common mistakes content is coming soon.
The Stability Ball Crunch is a foundational movement that builds strength and muscle through controlled, progressive overload. Train it 1 to 2 times per week with 3 to 5 working sets per session, gradually adding weight or reps as form holds up.