Diaphragmatic (Belly) Breathing
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In diaphragmatic breathing, you will actively expand the abdomen during inhalation and then relax on exhalation. The abdominal expansion occurs via the diaphragm contracting and pressing down on the abdominal contents. Chest expansion is kept at a minimum in this type of breathing.
Regular practice of diaphragmatic breathing draws the mental focus into what is known as the “belly brain”. It has a calming effect on the mind while, at the same time, potentially strengthening the diaphragm. I recommend practicing diaphragmatic breathing for 5-10 minutes per day.
To learn more about diaphragmatic breathing and motion of the diaphragm, click on http://www.dailybandha.com/2015/08/diaphragmatic-belly-breathing.html