Ab-Hold Exercise!
Isometric exercise means your muscles are holding a position tight, without movement. Try an Isometric Ab-Hold exercise to strengthen your core. Begin seated. Place both arms along the side of your body for support. Next slowly lean back until you feel your abs engage. Next, lift both legs up off the floor. Breathe normally. Hold for a count of 10 seconds, then release.
*Consult your physician before performing exercise.