An inspiratory exerciser apparatus has a loop shape housing with a mouthpiece 1, an air inlet 2, an outlet 3 and a spring-loaded valve 4 that provides a restriction to inhalation through the inlet. The apparatus includes an electronics unit 60 that records use of the apparatus for download to a remote computer, such as via a connector port 65 or by wireless means. The electronics unit 60 also causes lamps 63 in a translucent part of the housing 11 to flash during the prescribed exercise period to encourage the patient to inhale and exhale at a prescribed rate and for a prescribed time.