The diaphragm plays a significant role in proper breathing. Situated below the rib cage, it partitions the abdominal and thoracic cavities. The diaphragm contracts and releases as we breathe. Its anatomical geography is extensive. It extends down the front of the lumbar spine where it connects with the iliopsoas muscle, a long muscle that moves along the front of the spine to the back of the pelvis into the femur. The inner spinal muscles are paramount to good postural alignment. When we breathe correctly, these muscles partner the breathing cycle to lengthen the lumbar spine. When we breathe incorrectly, the muscles do not get a significant amount of oxygen, which causes spasms or muscle tension.