Plank Knee Drive

One of my favorite plank moves!  You totally forget you are in plank position...  BONUS!

In a high plank position, start with one foot going to the side as close to the arm as you can get it while still putting your heal down.  Yep, your heal goes down flat on the floor!  While the foot is flat on the floor,  with the other leg, drive the knee thru the middle of the foot with heal down and the arm.  Then, step back and repeat with the other side.

Alternate sides and remember to keep your shoulders right above your wrists for good high plank form.