Dumbbell Decline Crunch (Behind Head)
A short abdominal curl on a decline bench while both hands hold a dumbbell behind the head and the legs remain secured.
How to do it
- Secure the legs under the decline bench rollers.
- Support a manageable dumbbell with both hands behind the head.
- Keep the pelvis settled on the pad and the neck aligned with the trunk.
- Curl the upper back away from the bench by shortening the abdominal wall.
- Pause within the small crunch range without sitting fully upright.
- Lower under control while keeping the dumbbell steady.
Key technique cue
Don't swing the dumbbell; short range, hips pinned to the bench.
Common mistakes
- ✕ Turning the small crunch into a full hip-driven sit-up.
- ✕ Pulling the head forward with the hands or weight.
- ✕ Swinging the dumbbell to start the upward movement.
- ✕ Lifting the pelvis away from the bench.
Benefits
- ✓ Adds external resistance to a trunk-flexion exercise.
- ✓ Demonstrates a controlled partial curl rather than a sit-up.
- ✓ Keeps the lower body supported while the abdominals work.
Progression: from easier to harder
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Step 3 You are here - Dumbbell Decline Crunch (Behind Head)
About the exercise
This decline crunch keeps the movement in the trunk: the upper back curls away from the bench while the pelvis stays supported. A dumbbell held behind the head adds resistance to the small curling motion. The feet remain under the bench rollers and the elbows stay open through the repetition. This is not a full sit-up: the torso never needs to become upright, and the action is a repeated curl and controlled lower with the abdominal wall working.
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