Power up your plank by adding a side leg lift
Challenge your core with this move. Begin in a high plank, on your hands and toes, body straight. Then, lift your right foot off the ground about 2 inches. Keeping your torso and shoulders still, lift your right foot up toward your right hand, and then return to your starting position. Next, lift your left foot up off the floor. In a smooth, controlled motion move your left foot toward your left hand, and then return to your starting position. Do 6 total reps.
*Consult your physician before performing exercise.