Rock Your Core and Tone Your Abs With This Bodyweight Workout

Adding an arm reach to your elbow plank forces the abs into high gear as they work to keep the torso steady.

• Begin in an elbow plank with your feet slightly wider than your hips to create more stability.
• Reach your right arm straight out, with the thumb pointed toward the ceiling. Return back to elbow plank, and reach your left arm out. This completes one rep.