Exercise guide
Dumbbell Twisting Crunch
- Intermediate
- Compound
- Rep-based
- Waist
The Dumbbell Twisting Crunch is a dynamic core exercise that integrates resistance to target the rectus abdominis and obliques, enhancing rotational power and midsection definition.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Lie flat on your back with your knees bent and feet planted firmly on the floor, hip-width apart.
- Hold a single dumbbell with both hands positioned directly over your chest.
- Tuck your chin slightly and engage your core to press your lower back into the floor, eliminating any arch.
How to do it
- Exhale as you lift your shoulder blades off the floor, rotating your torso to bring the dumbbell toward the outside of your left knee.
- Inhale as you slowly lower your torso back to the starting position with a controlled 2-second eccentric phase.
- Perform the next repetition by crunching and rotating toward the outside of your right knee.
- Continue alternating sides, ensuring the movement is driven by the core rather than arm momentum.
Form checklist
- Keep your lower back in contact with the floor throughout the entire movement.
- Lead the rotation with your shoulders and ribcage, not just your arms.
- Avoid jerking the weight or using momentum to lift your torso.
- Maintain a small gap between your chin and chest to avoid neck strain.
Pro tips
- Focus on the 'rib-to-hip' connection, imagining you are pulling your opposite rib toward the opposite hip bone for maximum oblique recruitment.
- Pause for a split second at the peak of the rotation to emphasize the mind-muscle connection and peak contraction.
Make it harder
- Perform the movement on a decline bench to increase the range of motion and gravitational resistance.
- Lift your feet off the floor into a 'tabletop' position (90-degree hip and knee angle) to further challenge core stability.
Frequently asked
- What muscles does the dumbbell twisting crunch work?
- The dumbbell twisting crunch primarily targets the abs and obliques, and also works the erector spinae as secondary muscles.
- What equipment do you need for the dumbbell twisting crunch?
- The dumbbell twisting crunch uses dumbbell.
- Is the dumbbell twisting crunch good for beginners?
- The dumbbell twisting crunch is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.