Plank with Knee Ups!
Up for an ab challenge? Take your planks up a notch by adding this simple move. Begin in a regular front plank. Next, bend your right knee and bring your knee toward your chest. Maintain neutral spine and pull your belly button up. Then, extend your right knee, kicking your leg straight out behind you. Repeat 10 times, then release to your front plank. Next, repeat the same motion bending your left knee toward your chest. Do 10 times. Control your entire range of motion and maintain proper form.
*Consult your physician before performing exercise.