Sit on a carpeted floor or on your mat with your legs in front of you, knees bent and feet hip-distance apart and flat on the floor.
Holding the outer parts of your thighs firmly with your hands, elbows bent, tilt your pelvis under slightly and pull your belly-button up and in as you round your back and curl your abs into a C shape [shown].
Keep your legs and butt tight and exhale each time you do a curl. Do 3 sets of 16 reps each.
Benefits: Abs, thighs, and arms