Abstract: An exercise machine includes a bench defining an aperture, a seat slidably mounted on the bench, first and second columns on which the bench is mounted, a board defining a series of apertures, a bolt insertable through the aperture defined in the bench into one of the apertures defined in the board for retaining the board in position in respect to the bench, a third column on which the board is mounted, two rods transversely projecting from the board in opposite directions for supporting feet of an exerciser, two wings pivotably linked to the bench between a folded position and an extended position, two resistance devices each secured to a corresponding one of the wings, two oars each linked to a corresponding one of the resistance devices so that there will be resistance when the oars are rowed, two feet pivotably linked to the second column, two hydraulic cylinders each connected between the bench and a corresponding one of the feet so that the exercise machine is rockable.