Decline Crunch
- Beginner
- Bodyweight
The decline crunch is a crunch performed head-down on an angled bench with the feet secured. Only the shoulder blades leave the pad; the lower back stays in contact throughout, which keeps the movement in trunk flexion rather than hip flexion. Declining the bench increases the resistance gravity applies at the start of the range, so the abdominals work harder than they would on the floor for the same rep count. Steeper angles make it harder, which gives a simple progression without adding external load.
How to do the Decline Crunch
- Set a decline bench to a moderate angle and hook your feet under the roller pads.
- Lie back with your knees bent and your lower back resting on the bench.
- Cross your arms over your chest or rest your fingertips beside your ears without pulling on the neck.
- Exhale and curl your shoulder blades off the bench by shortening the abdominals.
- Stop once the upper back has left the pad, keeping the lower back in contact.
- Inhale and lower slowly to the start without resting at the bottom.
Muscles worked
- Primary:
- Core
Why train it
- Increases abdominal loading over a floor crunch without adding any external weight.
- Keeps the range short and the lower back supported, which suits high rep finisher work.
- Progresses by bench angle alone, so one station covers several difficulty levels.
Common mistakes
- Pulling on the head with the hands, which strains the neck and hides how little the abdominals moved.
- Curling all the way up into a sit-up, which hands the work to the hip flexors.
- Setting the decline too steep too soon, which usually turns into a swinging half rep.
- Dropping back to the bench between reps, which discards the eccentric and the tension with it.
Frequently asked questions
What muscles does the Decline Crunch work?
The Decline Crunch trains the core, and little else. No other group takes a meaningful share of the load, which is what makes this a clean way to target the core directly.
What equipment do I need for the Decline Crunch?
None. The Decline Crunch is a bodyweight movement, so your own weight is the resistance and floor space is the only requirement.
Is the Decline Crunch suitable for beginners?
Yes. The Decline Crunch is rated beginner: you are the load, so there is no weight to get wrong. Add reps or time only once the position holds from the first of them to the last.
Can I do the Decline Crunch at home?
Yes, anywhere. There is nothing to buy and nothing to set up, which makes the Decline Crunch one of the movements worth keeping for days you never reach a gym.
How many sets and reps of the Decline Crunch should I do?
Three sets of 12 to 20 reps, or 30 to 60 seconds for anything you hold. Add load or leverage once the top end feels easy rather than piling on more reps.
What are good alternatives to the Decline Crunch?
Cable Side Bend, Dumbbell Side Bend, and Machine Crunch train the same primary muscles as the Decline Crunch. Pick whichever one matches the equipment in front of you.