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  3. Exercises
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  5. Core & Abs
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  7. Cable Decline Crunch

Exercise guide

Cable Decline Crunch

  • Intermediate
  • Compound
  • Rep-based
  • Waist

The Cable Decline Crunch combines the constant tension of a cable machine with the increased range of motion of a decline bench to deeply isolate the rectus abdominis and obliques. This variation allows for significant progressive overload compared to standard floor crunches.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Cable Decline Crunch demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Abs
  • Obliques

Secondary

  • Erector spinae

Equipment

  • Cable
  • Rope

Setup

  1. Position a decline bench in front of a cable station with the headrest closest to the pulley.
  2. Attach a rope handle to the high pulley and secure your feet firmly under the bench rollers.
  3. Grasp the rope ends and hold them beside your ears or tucked against your upper chest.
  4. Lie back on the bench so your torso is at a decline, ensuring there is already tension on the cable.

How to do it

  1. Exhale as you flex your spine, curling your shoulders and upper back off the bench toward your midsection.
  2. Focus on 'rolling' your torso forward, squeezing your abdominals hard at the peak of the contraction.
  3. Inhale as you slowly unroll your spine back to the starting position using a controlled 2-3 second tempo.
  4. Stop just before your shoulder blades touch the bench to maintain constant tension on the abdominal wall.

Form checklist

  • Keep your lower back pressed into the bench at the start of each rep.
  • Avoid pulling the rope with your arms; your hands should remain static relative to your head.
  • Ensure the movement comes from spinal flexion (curling) rather than hinging at the hips.
  • Keep your chin tucked slightly toward your chest to maintain a neutral neck alignment.

Pro tips

  • Imagine trying to touch your ribcage to your pelvis to maximize the shortening of the abdominal fibers.
  • Squeeze your glutes slightly to stabilize the pelvis, which helps prevent the hip flexors from dominating the movement.

Make it harder

  • Incorporate a 2-second isometric hold at the point of maximum contraction.
  • Increase the decline angle of the bench to increase the gravitational resistance and range of motion.

Frequently asked

What muscles does the cable decline crunch work?
The cable decline crunch primarily targets the abs and obliques, and also works the erector spinae as secondary muscles.
What equipment do you need for the cable decline crunch?
The cable decline crunch uses cable and rope.
Is the cable decline crunch good for beginners?
The cable decline crunch is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • 3/4 Sit-UpBeginner · abs and obliques
  • 45 Degree Bicycle Twisting CrunchIntermediate · abs and obliques
  • 45 Degree Lean Back Alternate Knee RaiseBeginner · abs and obliques
  • 45 Degrees Arms PlankIntermediate · abs, deltoids, obliques, and pectorals

Train it with Crucible Fit.

Every movement in this library is in the app with video and instructions, ready for your own sessions on the days between Crucibles. Your first Crucible is on us.

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