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The exact causes of the discomfort relief after the breath-hold breakpoint is unknown yet. It has been stated that breath "pacemaker" continue to work independently of voluntary breath holding. Thus, while breath holding, the breath center is trying to activate the diaphragm and the afferent feedback from the diaphragm normally causes the feeling of ...


This occurs because the feelings of needing more air to breath result from changes in the concentration of carbon dioxide in the bloodstream. This happens because the carbon dioxide gets dissolved in blood, turning into carbonic acid (H2CO3). This, since it is an acid, dissociates into ions, and your body can detect that change in acidity. These changed PH ...

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