The dumbbell suitcase crunch is a weighted version of a popular abdominal training exercise. The simple addition of a weight makes the suitcase crunch far more difficult, helping build the "six pack" muscles and providing a different stimulus to the core during training.
Allows you to train in lower rep ranges when bodyweight crunches become too easy
Weighted ab training can help the core muscles grow and look more defined
Increases abdominal strength, not just muscle definition
Begin by lying on your back on the ground. Your legs should be straight and your arms extended behind your head holding a medicine ball. This will be your starting position.
To perform the movement, tuck the knees toward your chest, rotating your pelvis to lift your glutes from the floor. As you do so, flex the spine, bringing your arms back over your head to perform a simultaneous crunch motion.
After a brief pause, return to the starting position.