Board Thread:Roleplay/@comment-28792791-20160220194910/@comment-27304481-20160225043145

Berlinite: Well, here is everything I do when I have to speak. (Inhale) Well, If my abdomen is relaxed, this contraction causes the abdomen to bulge outwards, expanding the volume of the body. This increased volume causes a fall in pressure in the thorax, which causes the expansion of the lungs. When the diaphragm relaxes, air leaves largely by elasticity of the lung. This is quiet, relaxed breathing needing little energy. When need increases, the abdominal muscles resist expansion. The increased abdominal pressure then tilts the diaphragm and ribcage upwards with an increase in volume and the entry of air. Expiration follows relaxation of diaphragm and abdominal muscles, but can be increased by downward action of abdominal muscles on the rib cage. This forced expiration increases pressure across the airway's walls and may lead to narrowing and perhaps to wheezing. All of this needs to take place and go properly if I wish to even begin to speak, and that is just preparation.