At least an expiratory period during which a user is instructed to take an expiratory action as a respiratory action and an inspiratory period during which the user is instructed to take an inspiratory action as the respiratory action are set. One of enlargement and reduction of a first object is performed during the expiratory period, and the other of the enlargement and the reduction of the first object is performed during the inspiratory period, the first object representing a loop path. During the expiratory period, a second object is caused to move along and complete one full circuit of the path in a time from a beginning to an end of the expiratory period, and during the inspiratory period, the second object is caused to move along and complete one full circuit of the path in a time from a beginning to an end of the inspiratory period.
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