The Alternate V-Sit Roll exercise works your abs, obliques and lower back.
-From Flab to Fab. Alternate V Sit Roll: To complete 1 rep of this move, you go from V sit to your left side then back to V sit and on to your right side. Slowly roll down your spine on to your side and keep your arms and legs lifted. We'll do 2 sets of 10 repetitions.