ProgreviaCable crunch: proper form, muscles worked and common mistakes
Home › Exercises › Abs › Cable crunch
How to do it
Kneeling at the high pulley with the rope behind your neck, curl the trunk down bringing the elbows toward the thighs with the abs, without pulling the neck or using the hips.
Muscles worked
Main muscle: abs. When it plans weekly volume, every set of this exercise counts in full for abs: the generator does not split it with other muscles.
Cable crunch: the ab exercise you can progress with plates, not just reps
The cable crunch is one of the few ab exercises where you can add load in a measurable way, just like any other weighted lift. That is what sets it apart from the Pallof press, which also uses the cable but is not about flexing the trunk: there the cable tries to turn you and you resist without moving, using light loads. Here the job is to curl the spine against resistance, so the rectus abdominis works through a long range, similar to the reverse crunch or the bicycle crunch but with a fixed load you choose.
It fits when you want to build abdominal size or when floor work has stopped challenging you, and it is a handy alternative to the Hanging leg raise when your grip is the limit. Put it at the end of the session, when you no longer need a fresh back for the big lifts. If you catch yourself pulling with your arms or letting the hips do the work, drop the weight until only the torso moves.
One detail the technique notes do not cover: pick a load that lets you exhale fully at the bottom and hold a beat with the spine rounded. Add weight only when you finish your rep range with that same path, not when you have simply learned to swing.
Technical sheet
- Movement pattern
- Core
- Minimum level
- Beginner
- Technical demand
- Basic
- Fatigue it generates
- Low (0.4 out of 2.2)
- Risk if technique breaks down
- Low
These are the values the generator uses to decide where the exercise goes within the session.
Recommended sets and reps
As an isolation exercise, it works best in 3–4 sets of 10–15 reps with 0–2 RIR. Use it at the end of the session to add volume without systemic fatigue.
Common mistakes to avoid
- Pulling on the neck with your hands and flexing at the hips instead of curling the spine with the abs.
- Letting the weight stack touch down between reps: the cable loses its constant tension, which is its whole advantage.
- Using too much weight at the cost of technique and full range of motion.
What the research says
This is an isolation exercise. For beginners, adding it on top of compound lifts does not always help: in the trial by Gentil and colleagues (2013), people who only did lat pulldowns gained as much arm size as those who also did curls. It earns its place with experience, and for muscles the big lifts leave short.
On how hard to push: the meta-analysis by Refalo and colleagues (2023) found no clear advantage in going to failure over stopping just short of it. That is why the generator programs it with reps in reserve (RIR) instead of asking for failure on every set.
- Gentil P, Soares SR, Pereira MC, et al. Effect of adding single-joint exercises to a multi-joint exercise resistance-training program on strength and hypertrophy in untrained subjects. Applied Physiology, Nutrition, and Metabolism. 2013;38(3):341-344.
- Refalo MC, Helms ER, Trexler ET, Hamilton DL, Fyfe JJ. Influence of resistance training proximity-to-failure on skeletal muscle hypertrophy: a systematic review with meta-analysis. Sports Medicine. 2023;53(3):649-665.
How Cable crunch compares with other abs exercises
Of the 14 abs exercises in the catalogue, ranked from least to most fatiguing by the values the generator uses, Cable crunch is number 3 (tied with 4 others).
That makes it a good candidate for adding abs sets at the end of a session or in heavy weeks, when you want volume without extra fatigue.
With different equipment, the same movement pattern offers 12 alternatives, such as Reverse crunch, Dead bug and Bicycle crunch.
| Exercise | Equipment | Fatigue | Technique |
|---|---|---|---|
| Reverse crunch | bodyweight | Low (0.3 out of 2.2) | Basic |
| Dead bug | bodyweight | Low (0.3 out of 2.2) | Basic |
| Bicycle crunch | bodyweight | Low (0.4 out of 2.2) | Basic |
| Cable crunch | cable | Low (0.4 out of 2.2) | Basic |
| Pallof press | cable | Low (0.4 out of 2.2) | Needs coaching |
| Plank | bodyweight | Low (0.4 out of 2.2) | Basic |
| Side plank | bodyweight | Low (0.4 out of 2.2) | Basic |
| Hollow hold | bodyweight | Low (0.5 out of 2.2) | Needs coaching |
An isolation exercise. In the trial by Gentil et al. (2015), with untrained young men over ten weeks, the biceps curl and the lat pulldown were equally effective for gaining strength and size in the elbow flexors: isolation is not filler.
- Gentil P, Soares S, Bottaro M. Single vs. multi-joint resistance exercises: effects on muscle strength and hypertrophy. Asian Journal of Sports Medicine. 2015;6(2):e24057.
Related guide
How to get visible abs: the truth about the six-pack
Alternative exercises
More core exercises
Add it to your routine
Progrevia can generate a personalized routine that includes Cable crunch based on your level, goal and available days.
Build your abs workout
Generate a full routine with the emphasis on abs and Cable crunch among your preferred exercises. Free, no sign-up.
Not sure what to pick? The setup assistant walks you through it, one question at a time. Open the assistant
Frequently asked questions
What muscles does Cable crunch work?
Cable crunch mainly works the abs muscle group, plus synergist and stabilizer muscles depending on the variation.
How many sets of Cable crunch should I do?
Between 3 and 5 sets per session, adjusting the total weekly volume for abs to your level (about 10–20 sets per muscle per week).
How heavy should I go on the cable crunch?
Heavy enough that a range of about eight to fifteen reps is hard, but light enough that only your torso moves. If you need to yank with your arms or sit your hips back toward your heels to finish a set, it is too much. Start light, add weight in small jumps, and always judge by the same range of motion.
Progrevia builds gym routines from your own data: periodization, RIR and week-by-week progression. Free, no card.