Standing Criss Cross Crunch

1.  Stand with your feet shoulder width apart, toes pointed forward, extend both arms overhead tighten your stomach muscles as if someone is going to punch you.

2.  Lower your right elbow and raise your left knee, bringing them together on a diagonal line.

3.  Return to the starting position. Switch to the other side.  That is one repetition.
4.  Do 20 repetitions.
5.  Complete 1-3 sets.