Like the barbell variation, the dumbbell Cuban press is a three-phase movement.
A wide-grip upright row until the elbows are aligned with the shoulders (no higher).
An external rotation.
An overhead press.
Just reverse the steps and repeat for reps. Start light. It doesn't take much weight to strengthen the rotator cuff and add some integrity to the shoulder joint.
Finally, an ab training program that's excuse proof! No more throwing in a couple of pathetic, obligatory crunches at the end of a workout. And the answer was staring you in the face the whole time.
The quick set-up allows you to take advantage of the stretch shortening cycle in your hip extensors. It takes practice, but it should become second nature and fast.