This move strengthens your core and works your arms, back, and shoulders.
Wide-Leg Plank with Jab: You'll need your dumbbells within close reach. Get into a full plank position. Pull your abs in tight and keep your legs wide, a few inches past your shoulders. Grab a dumbbell with your right hand and punch it towards your left wrist. Repeat the punch for 8 to 12 reps. Then switch sides and do the same thing with your left arm, punching it toward the right for 8 to 12 reps. Make sure to engage your abs with every punch. This move strengthens your core and works your arms, back, and shoulders.