There is a lot of misunderstanding about the diaphragm in voice work. The diaphragm is a smooth, concave muscle like a dome that separates the abdominal cavity from the respiratory cavity. The top of the dome of the diaphragm sits at about breast level and then it slopes downward all the way round the respiratory cavity to line the six lower ribs of the ribcage and attach in the back to the thoracic spine. It does not come out of the rib cage! Let me repeat that, it does not come out of the