TETSUCrunch (On Stability Ball, Arms Straight)
The Crunch (On Stability Ball, Arms Straight) is a stability ball exercise for the core that primarily targets the abs, with the hip flexors assisting. Follow the 6 steps below for correct form, with an animated demonstration.
How to do the Crunch (On Stability Ball, Arms Straight)
- Sit on the stability ball with your feet flat on the ground and your knees bent at a 90-degree angle.
- Lie back on the ball until your lower back is supported and your upper body is parallel to the floor.
- Place your hands behind your head or cross them over your chest.
- Engage your abs and lift your upper body off the ball, curling your shoulders towards your hips.
- Pause for a moment at the top, then slowly lower your upper body back down to the starting position.
- Repeat for the desired number of repetitions.
Common questions
What muscles does the Crunch (On Stability Ball, Arms Straight) work?
The Crunch (On Stability Ball, Arms Straight) primarily targets the abs. The hip flexors work as supporting muscles.
What equipment do I need for the Crunch (On Stability Ball, Arms Straight)?
You need a stability ball to perform the Crunch (On Stability Ball, Arms Straight).
How many sets and reps of the Crunch (On Stability Ball, Arms Straight) should I do?
3 to 4 sets of 10 to 15 controlled reps of the Crunch (On Stability Ball, Arms Straight) suits most programs — smaller muscle groups respond well to moderate loads and strict form. Progress by adding reps first, then small weight increments.
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