…every functional deficiency in the organ [the larynx] is replaced by either breath pressure, or by an excessive consumption of breath. Either the breath is dammed up, or it escapes partly unused (‘wild air’, ‘superfluous breath’); the former stiffens the larynx, the latter makes it flabby, and either turns it into a mechanism that has little to do with singing.

Husler, F., and Y. Rodd-Marling. “Singing: The physical nature of the organ.” (1965).