A method for manufacturing a resin molding can be provided that uses a laser beam. In a preferred embodiment, a plurality of legs extend perpendicularly from the base platform which function as stops to preventing tilt of the exercise platform from exceeding a maximum tilt. Thus, the boundary displayed overlapping on the object region and the closed region for expansion or contraction are removed, and a single linked boundary is formed on the new object region. The exposing unit includes an exposing unit body having an exterior made of a resin; and an electrically conductive holding member which is longer than the exposing unit body in the arrangement direction, and which holds the exposing unit body, wherein the holding member is electrically connected to the body frame to be grounded. The heated fluid circuit is separate from an engine coolant circuit through which an engine coolant for cooling the engine flows.