An exerciser includes a board, a frame, a swing rod, an upper foot rest, a lower foot rest and a resilient rope. An upper end of the swing rod is articulated to an upper end of the vertical support and a lower end of the swing rod is fixed to a central portion of the lower foot rest. The resilient rope is connected between the swing rod and the vertical support. The board is fixed on the lengthwise beam of the frame. The lengthwise beam and the vertical support of the present invention form a triangular support. The board installed on the lengthwise beam is arranged obliquely.