How to Do Bosu Ball Cable Crunch With Side Bends


Start and end of one clean rep of Bosu Ball Cable Crunch With Side Bends.
Quick facts
| Primary muscle | Core |
|---|---|
| Secondary muscles | — |
| Equipment | Cable |
| Category | Strength |
How to perform Bosu Ball Cable Crunch With Side Bends
- Connect a standard handle to each arm of a cable machine, and position them in the most downward position.
- Grab a Bosu Ball and position it in front and center of the cable machine.
- Lie down on the Bosu Ball with the small of your back arched around the ball. Your rear end should be close to the floor without touching it.
- With both hands, reach back and grab the handle of each cable.
- With your feet positioned in a wide stance, extend your arms straight out in front of you and in between your knees. Your hands should be at knee level.
- Keep your arms straight and in-line with the upward angle of the cable. Elevate your torso in a crunching motion without dropping or bending your arms.
- Maintain the rigid position with your arms. Slowly descend back to the starting position with your back arched around the Bosu Ball and your abdominals elongated.
- Repeat the same series of movements to failure.
- Once you reach failure, keep your abs tight and raise your torso into plank position so your back is elevated off the Bosu Ball.
- Lower your arms down to your side; keep them straight. Start doing alternating side bends; reach for your heels! This finishing movement will focus on your obliques.
Muscles worked
- Core (primary): braces the trunk and resists twisting to protect the spine.
Sets & reps by goal
| Goal | Sets × reps | Load | Rest |
|---|---|---|---|
| Strength | 3–5 × 3–5 | Heavy (~85%+) | 2–3 min |
| Hypertrophy | 3–4 × 8–12 | Moderate (~65–75%) | 60–90 s |
| Endurance | 2–3 × 15–20 | Lighter (~50–60%) | 30–45 s |
Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
Form tips
- Brace as if about to take a light punch and breathe shallowly — don't hold your breath for the whole set.
- Keep tension on the cable through the whole range — pause before the stack touches down instead of letting it crash.
- Treat every rep the same — a repeatable setup and bar path is what lets you add weight safely over time.
- Breathe out on the effort and in on the return, keeping one steady rhythm across the set.
Common mistakes
- Cranking with the hip flexors or neck instead of moving from the trunk.
- Letting the stack yank the working muscle back at the end of each rep.
- Chasing weight jumps before the current load feels solid on every rep.
Frequently asked questions
What muscles does Bosu Ball Cable Crunch With Side Bends work?
Bosu Ball Cable Crunch With Side Bends is a focused movement that primarily works the core.
What equipment do I need for Bosu Ball Cable Crunch With Side Bends?
Bosu Ball Cable Crunch With Side Bends needs a cable station with the right handle attachment.
How many sets and reps should I do for Bosu Ball Cable Crunch With Side Bends?
It depends on your goal: about 3–5 sets of 3–5 heavy reps for strength, 3–4 sets of 8–12 for muscle growth, or 2–3 sets of 15–20 for endurance. Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
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