Diaphragmatic Breathing (Deep Breathing )
Diaphragmatic breathing involves the utilization of the diaphragm in order to promote maximum lung expansion and it is otherwise known as deep breathing technique. The diaphragm is a muscle located between the chest and the abdominal cavity and it descends during diaphragmatic breathing in order for the lung to expand. When this happens, the diaphragm presses into the abdomen expanding the belly outward. Due to this, it is also known as belly breathing or abdominal breathing.
Shallow Breathing
Shallow breathing, as opposed to diaphragmatic breathing involves the expansion of the chest during inspiration rather than the belly. Shallow breathing aims at drawing minimal amount of air into the lungs by the use of the muscles in between the ribs (intercostals muscles). This makes the chest rise and fall in every inspiration and expiration.