The liver is a glandular organ, intended for the secretion of bile from
the blood. It is situated under the diaphragm and partially over the
stomach; therefore the exercises which produce pressure and relief upon
the stomach, exert the same effect upon the liver. That the liver may
properly perform its function it is necessary for it to be thus
exercised. One cannot speak or sing well without moving the diaphragm,
and when this is moved it moves nearly all the organs contained in the
trunk of the body, and especially promotes the healthy activity of the
lungs, stomach, liver, and intestines.