Home Exercises:

THE AB VACCUUM
AB VACUUM -- In a seated position, exhale all the air from your lungs. After completely exhaling, pull the abdomen inward and hold for 20-30 seconds. Continue to breathe lightly through your nostrils, but make sure you are pulling your abs in as if you are attempting to make your abs and back touch. This exercise works the transversus, the main muscle that pulls your abs in. In fact, it's the most effective exercise for creating a flat stomach.