Magnetic field damping power-generating body builder

Provided is a magnetic field damping power-generating body builder. A straight gear, a front gear and a rear gear are made by using oval pipes, adjusting discs are arranged under the front gear and the rear gear, a rotary housing is arranged on the straight gear and the front gear, a rotating disc is arranged in the rotary housing, a stepping motor is arranged in the upper portion of the rotary housing, a gear is arranged on a steel shaft of the stepping motor, a storage rack, a front armrest and an electronic instrument are arranged on a cylinder, a touch switch and a liquid crystal display are arranged on the electronic instrument, and two groups of electric wires are arranged on the electronic instrument. Pedal bars are arranged on a central shaft, pedals are arranged on the pedal bars, a generator is arranged under the rotating disc, a rolling wheel is arranged on the rotary shaft of the generator, and a small storage battery and a charger are arranged under the generator. Four groups of electric wires are arranged on the charger, a sitting box is arranged on the straight gear and the rear gear, a socket is arranged on the sitting box, a large storage battery is arranged in the sitting box, two groups of electric wires are arranged on the storage battery, a cushion, a backrest and a handle are arranged on a fixing frame, a waist cushion and a rotary knob are arranged at the rear portion of the backrest, a rear armrest is arranged on a round fixing body, and a cardiotachometer is arranged at the front portion of the rear armrest.