Where should I hold the dumbbell?

You can hold the dumbbell against your chest for a slightly easier variation or keep your arms extended toward the ceiling to increase the lever arm and difficulty.

How heavy should the dumbbell be?

Start with a light weight that allows you to complete 12 to 15 repetitions with perfect form. Hypertrophy in the abs comes from tension and control rather than lifting max weight.

Is this better than a standard bodyweight crunch?

Weighted crunches allow for progressive overload, which is essential for building thicker, more visible abdominal muscles once bodyweight reps become too easy.

Dumbbell Crunch Guide: Form, Steps, and Benefits

Master the dumbbell crunch with our expert guide. Learn the proper technique to build a stronger core and defined abs using weighted resistance.

How to Perform

Lie flat on your back on a mat with your knees bent and feet anchored firmly to the floor.
Hold a single dumbbell with both hands positioned directly over your chest with your arms extended or slightly bent.
Engage your core and slowly lift your shoulder blades off the floor while pushing the dumbbell toward the ceiling.
Exhale at the top of the movement and pause for a second to maximize the contraction in your rectus abdominis.
Lower your torso back to the starting position in a slow, controlled manner without letting your shoulders fully relax on the floor.
Maintain a neutral neck position by tucking your chin slightly toward your chest throughout the entire set.

Common Mistakes

Leading the movement with the chin or neck instead of the abdominal muscles
Using momentum to swing the weight upward rather than using controlled tension
Lifting the lower back off the floor, which shifts the load to the hip flexors
Resting the weight on the chest, which reduces the constant tension on the core

Muscles Worked

Primary movers

Stabilizers

Obliques
Hip Flexors
Serratus Anterior

Related Guides

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

Abs · Core