Keeping the rib cage aligned with the pelvis during movement will help strengthen the core stabilizers. Breathing into the sides of the rib cage will help create a full and complete, 3-dimensional pilates breath. This video demonstrates the rib cage principle and several exercises to practice keeping the ribs aligned with the pelvis during

In this video, Elizebeth Ellison, STOTT PILATES Instructor Trainer, of Pilates Tutor in Marietta, Ga, teaches Angela Fowler about the rib cage principle and demonstrates exercises to practice keeping the core stabilizers engaged.

Practice this exercise throughout the day to help your body explore the relationship between the ribcage and the pelvis during breathing and as the arms move.