A method of intercepting controlled quantities of air exhaled from at least one of two nostrils on an individuals nose to permit inhalation of the intercepted air, including the steps of: providing an air flow intercepting apparatus and placing the air flow intercepting apparatus in an operative position relative to the individuals nostrils so that as the individual inhales and exhales during repeating breathing cycles: a) a first quantity of exhaled air flows past the air flow intercepting apparatus and b) a second quantity of exhaled air impinges upon the air flow intercepting apparatus so as to at least one of: i) stagnate and ii) be redirected by the air flow intercepting apparatus so that at least a portion of the second quantity of exhaled air is drawn into the individuals nostrils as the individual inhales.
