Cable Crunch
The cable crunch has you kneel below a high pulley, hold a rope near your head, and crunch your torso down against the cable's resistance. It loads your abs directly through spinal flexion with added weight, and it suits anyone who has bodyweight crunches down and wants a way to keep adding resistance as they get stronger.
Why it works
Your abs' main job is rounding your spine, pulling your ribs down toward your hips. A floor crunch only fights gravity for a short range near the top of the movement, but kneeling under a cable and crunching down against steady resistance keeps that same spinal flexion loaded through the entire rep, and you can add weight as your abs get stronger, which a bodyweight crunch can't offer on its own.
Set up
- Kneel below a high pulley with a rope attachment.
- Hold the rope ends near your ears or temples and stack your hips over your knees.
- Select a load that lets you complete the full range with control.
How to do it
- Flex your spine to crunch your torso down, bringing your elbows toward your thighs.
- Pause briefly at the bottom of the crunch.
- Slowly extend your spine back up to the starting position under control.
- Repeat for the set, keeping your hips relatively still throughout.
Form cues
- Crunch from your waist, not by pulling with your arms or shoulders.
- Keep your hips stacked over your knees, the movement should come from your spine.
- Exhale hard on the way down to help the crunch.
- Keep the rope close to your head instead of letting it drift forward.
Breathing: Exhale forcefully as you crunch down, and inhale as you extend back to the starting position.
Common mistakes
Pulling the rope down with your arms and shoulders instead of crunching.
Fix: Keep your arms fixed near your head and initiate the movement by rounding your spine, letting your abs do the pulling.
Rocking your hips back and forth like a hip hinge instead of flexing your spine.
Fix: Keep your hips stacked over your knees the whole time. If they're moving, drop the weight and focus on the spinal motion first.
Using too much weight and relying on momentum to drop down.
Fix: Slow the tempo and choose a load you can control through the entire rep, both down and back up.
How to program it
- This is a loaded ab isolation movement with fairly low systemic fatigue, so it fits well two or three times a week.
- Twelve to fifteen reps per set is a reasonable range, since the goal is a controlled spinal flexion, not a maximal one-off effort.
Safety notes
- Don't yank on the rope with your neck. Keep your chin gently tucked and let the crunch come from your trunk.
- Ease off the range if you feel strain in your lower back rather than your abs.
- Choose a weight you can control through the full range rather than one that forces you to use momentum.
Exercise profile
- Force
- Pull
- Mechanics
- Isolation
- Category
- Strength
Frequently asked questions
How many sets and reps of cable crunches should I do?
Two or three sets of twelve to fifteen reps works well, since the point is a controlled crunch rather than moving maximum weight.
What's the difference between a cable crunch and a regular crunch?
A regular crunch only uses your body weight against gravity for a short range. A cable crunch adds steady resistance you can increase over time, loading the same spinal flexion motion more heavily.
Can I do this without a cable machine?
Bodyweight crunches train the same motion without equipment, and an ab crunch machine is a fixed-path alternative if one is available.
Why do I feel this more in my hip flexors than my abs?
That usually means your hips are moving back and forth instead of staying stacked over your knees. Keep your hips still and let the crunch come from rounding your spine instead.