A system and method for managing ventilation of a user, through the use of an oral appliance, is disclosed. The appliance is configured to fit between the user's teeth and lips or cheeks to inhibit ventilation by the user around the appliance, and includes a passageway. An airway resistor within the passageway includes an aperture that is sized to allow a metered amount of air flow by the ventilation of the user. A pressure sensor measures an air pressure in the aperture, which measurement is transmitted to an external computer processor to generate feedback data for the user.
