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How to do the Cable Reverse Crunch

CoreAbsCableBeginner

The cable reverse crunch is one of the most effective tools for building genuine lower abdominal strength because the cable's constant tension keeps your abs working through the entire range of motion. Master this movement and you'll develop the kind of core control that carries over to every compound lift in your program.

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Muscles worked

Primary
AbdominalsObliques
Secondary
Hip flexorsLower back

Step-by-step

  1. Attach an ankle strap to a low pulley cable, lie flat on your back with your head toward the machine, and hook the cable to both ankles with your hips at roughly 90 degrees.
  2. Brace your core hard and curl your pelvis toward your ribcage, lifting your hips off the floor while drawing your knees toward your chest.
  3. Hold the contracted position for a full second, feeling your lower abs compress against the resistance of the cable.
  4. Slowly lower your hips back to the floor under control, resisting the pull of the cable all the way down before beginning the next rep.

Common mistakes

  • Using momentum to swing the hips up instead of curling them — slow the rep down and initiate every movement from the abs, not a leg kick.
  • Letting the lower back arch off the floor at the bottom, which transfers stress off the abs — press your lumbar spine gently into the mat throughout the set.
  • Choosing a cable weight so heavy that you cannot achieve a posterior pelvic tilt — reduce the load until you feel a true curl in your pelvis, not just a hip flexor pull.

Pro tip — Focus on tilting your pelvis posteriorly before you lift your hips — think about flattening your lower back into the floor first, then curling up, so the abs initiate the movement rather than your hip flexors taking over.

Sets & reps by goal

Build muscle3–4 sets × 10–15 reps
Get stronger3–4 sets × 6–8 reps
Lose fat / tone3 sets × 12–20 reps

Rest: 60–90 sec between sets.

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