Should my back stay flat during a cable crunch?

No, unlike a deadlift or squat, the cable crunch requires spinal flexion. You should actively round your back to fully contract the rectus abdominis.

How heavy should I go on this exercise?

Choose a weight that allows for 10 to 15 controlled repetitions with a full squeeze at the bottom. Going too heavy often leads to using momentum or involving the hip flexors.

Is the cable crunch better than a standard floor crunch?

The cable crunch is often superior for muscle growth because it allows for progressive overload and provides constant tension throughout the entire range of motion.

How to Perform the Cable Crunch: Master Your Core

Learn the correct form for cable crunches to build abdominal strength and definition with our expert, step-by-step strength coaching guide.

How to Perform

Attach a rope handle to a high pulley and kneel several feet back from the machine.
Grasp the rope and pull your hands to your face or the sides of your head, locking your hips in a fixed position.
Exhale and flex your spine to pull your elbows down towards your knees, focusing entirely on contracting your abdominals.
Stop the movement once your elbows reach mid-thigh level, ensuring your hips have not shifted backward.
Pause for a second at the bottom of the movement to maximize muscle fiber recruitment.
Slowly return to the starting position while maintaining tension on the core and resisting the weight on the way up.

Common Mistakes

Using the hip flexors to pull the weight down instead of flexing the spine.
Pulling with the arms and shoulders rather than the abdominal wall.
Sitting back on the heels which reduces the range of motion and tension.
Moving the head and neck independently of the torso during the crunch.

Muscles Worked

Primary movers

Stabilizers

Obliques
Serratus Anterior
Transverse Abdominis

Related Guides

3008 Abdominal Crunch — Core
Ab Roller — Core
Ab wheel — Core

Abs · Core