Abstract: An exercising device comprises an operation module, a step module, and a seat module. The operation module has an operation unit. The step module has steps for bearing feet of the user, respectively. The step module is configured to move the step. The seat module has a seat and a driving unit configured to swing the seat. The step module and the seat module are detachably attached to the operation module. The exercising device has any one of a first condition, a second condition, and a third condition. The operation module is configured to hold the step module when the exercising device has the first condition. The operation module is configured to hold the seat module when the exercising device has the second condition. The operation module is configured to hold both the step module and the seat module when the exercising device has the third condition.

Abstract: Operation time interval measurement means 28 of a passive exercise machine 1 measures the operation time interval and stores the measurement result of the operation time interval in association with the user identifiers in a machine operation table TB2.

Abstract: A massager disposes a roller unit having a plurality of roller rows substantially parallel with each other at an outer periphery to which a vibration of a massage head is provided, the roller unit being swingable about an axial line substantially parallel with axial direction of the roller rows, whereby the plurality of substantially parallel roller rows can be stably engaged with the user's treating body part.