process of breaking down the fats and carbohydrates we eat. CO2 is returned from the tissues and cells to the lungs via blood vessels, and any excess is exhaled. Crucially, however, part of your body’s quotient of carbon dioxide is retained when you exhale. Correct breathing both relies on and results in the right amount of carbon dioxide being retained in your lungs. Understanding this is just as important for serious athletes as it is for anyone interested in basic fitness or in weight management.
