PROBLEM TO BE SOLVED: To effectively prevent virus infection and suppress the influence on the business operation and management of a fitness club as much as possible. SOLUTION: A training machine 4 provided in a training room 2 of an unmanned fitness club has a machine ventilation fan 5 at a position within a horizontal radius of 2 m and a vertical direction of 50 cm on the front side of the user in use. Is provided, and the training machine 4 operates and exhausts when the operation of the training machine 4 is started or the presence of the user is detected. The exhaust port of the exhaust duct to which the machine ventilation fan 5 is connected is provided at a position not facing the outdoor sidewalk. [Selection diagram] Fig. 3
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