Abstract: An exercise apparatus for bending the user's legs by the exercise of muscles in the user's upper body includes a stationary frame, a seat mounted upon the frame for forward and rearward movement relative thereto and hinged leg support sections which fold and unfold in synchronism with the forward and rearward movement of the seat. To use the apparatus, a user sits upon the seat with his legs draped over the hinged leg supports and he pushes and pulls upon the stationary frame to effect the forward and rearward movement of the seat relative to the frame. As the leg support sections are folded and unfolded in response to the forward and rearward movement of the seat, the user's legs are bent at the waist and knees. A hydraulic cylinder is interposed between the frame and seat providing an adjustable resistance to the forward and rearward movement of the seat.