9. Roll Up
Lie faceup, with legs extended, knees together, feet flexed, arms overhead. Take a big inhale. As you exhale, lift arms up and forward, and use your abs to slowly roll up to a sitting position. Squeezing abs again, slowly lower down to starting position.
10. Jack Knife
Lie faceup, legs extended, feet together, arms extended overhead. Inhale, and as you exhale, squeeze abs and raise right arm and left leg, touching hand to foot. Inhale and slowly lower to starting position. Repeat for 15 seconds, then switch sides for 15 seconds.