Belly Banisher...

Feeling like I need to add something new to my abdominal workout!  These are challenging for me!  And look - I am even getting down on the floor!

Works abs
Lie face-up with knees bent at 90 degrees, calves on top of ball, arms at sides, palms flat. Squeeze ball between back of thighs and calves as you draw knees toward chest, performing a reverse crunch (as shown). Return to start; repeat. Do reps.