A foil is formed on a given substrate, then, peeled off of the substrate and floated on the water surface charged in a tank. The massage platform is raised into position by lifting the ends of the massage platform top assembly. The method comprises generating a test signal to the low pass filter and suppressing even-order harmonics due to transistor mismatches within the plurality of transconductor cells. A second horizontal rail unit is movable on the first horizontal rail unit along a first horizontal direction. The second ends of the shoulder straps are attached to the chest panel. The cable traveling subsystem comprises a wheel that rotates along a length of the cable.