Step by step instructions, muscle activation and variants for the Medicine Ball Crunch on Stability Ball.
A weighted abdominal crunch performed with the lower back arched over a stability ball and a medicine ball held at the chest or overhead. The stability ball allows a greater range of motion than a floor crunch, while the added medicine ball weight increases the challenge to the rectus abdominis.
The Medicine Ball Crunch on Stability Ball 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.
