Crunch (on Stability Ball, Arms Straight)
Skip the guesswork: Crunch (on Stability Ball, Arms Straight) leans on straightforward equipment demands for a trunk that resists rather than folds.
How to do 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.
Crunch (on Stability Ball, Arms Straight) Sets and Reps by Goal
Strength
4 sets of 6-8 reps at your hardest clean leverage, resting 2-3 minutes. Stop the set at the last rep that still looks like the first.
Hypertrophy
4 sets of 12-18 reps with 60 seconds of rest. Change one variable a week and let the rest stay put.
Endurance
3 sets of 25-30 reps with 30-45 seconds of rest. Add reps before you add load, and keep every rep the same shape.
Common Crunch (on Stability Ball, Arms Straight) Mistakes
Letting the return phase happen on its own
Control the way back with the same effort you spend on the way out.
Holding your breath through the hardest part of the rep
Exhale as you brace so the ribs stay down and pressure stays controlled.
Easier and Harder Than Crunch (on Stability Ball, Arms Straight)
Swap Crunch (on Stability Ball, Arms Straight) For
Crunch (on Stability Ball, Arms Straight) — Frequently Asked Questions
How do you 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. Use stability Ball and keep the movement controlled through the full range. The animated GIF above shows the complete rep at normal speed.
What muscles does the Crunch (on Stability Ball, Arms Straight) work?
The Crunch (on Stability Ball, Arms Straight) primarily targets the abs. It is classified as a core exercise and is performed with stability Ball.
How many sets and reps of the Crunch (on Stability Ball, Arms Straight) should I do?
For muscle growth: 4 sets of 12-18 reps with 60 seconds of rest. Change one variable a week and let the rest stay put. Adjust the load rather than the rep target if form breaks down before the final rep.
Is the Crunch (on Stability Ball, Arms Straight) good for beginners?
It is an intermediate movement. You will get more out of it once you can already perform the basic core patterns with controlled form. Beginners can still use it with light load and close attention to technique.
What can I do instead of the Crunch (on Stability Ball, Arms Straight)?
Try the Weighted Hanging Leg-hip Raise, Barbell Side Bent V. 2 or the Lever Kneeling Twist. Each trains the abs with a similar movement pattern, so you can swap based on the equipment you have available.
