This exercise engages your core while strengthening your upper body.
- Start in high plank, each hand holding onto a dumbbell that is resting on the floor. Move feet wider than shoulders.
- Pull right elbow back, raising dumbbell toward chest, keeping right elbow close to torso, abs tight, and hips facing down.
- Lower weight for one rep; repeat on the opposite side.
- Do three sets of 8 reps on each arm.