In this workout you are getting four different 15-minute segments. Two are dedicated to the abdominals and two are dedicated to increasing flexibility through floor stretches. Amy Bento encourages you to mix and match as you feel appropriate - add some extra abs after one of her other workouts for a powerful gut-buster. The choice is yours. Amy's exercises are easy to follow and you don't have to get into a pretzel pose to do any of these stretches. Amy keeps this simple and effective.