P90X - Ab Ripper X

Mason Twists

You start with your knees raised to where your feet are off the ground, and almost sitting completely up (back slightly angled backwards). Clasp your hands together into one big fist, reach them over ...You start with your knees raised to where your feet are off the ground, and almost sitting completely up (back slightly angled backwards). Clasp your hands together into one big fist, reach them over to the right and touch the ground, then reach over to the right and touch the ground, going back and forth. (less)

Routine:

Set 1: 40 reps

Set 2: 10 reps