A resistance exercise apparatus is provided, the apparatus comprising: a stretchable cord having opposing first and second ends, the cord having an internal cavity and an external surface; at least one plug being inserted within the internal cavity of the cord adjacent the first end of the cord; at least one sleeve being placed over the external surface of the cord adjacent the first end of the cord, the plug being situated within a length of the sleeve; at least one tether forming two compartments, a first loop compartment is designed to received at least one end of the cord with at least a portion of the sleeve and at least a portion of the plug; and at least one attachment device, at least a portion of the attachment device being designed to be received within at least a portion of the second compartment of the tether.