Regulating machine

The invention relates to the technical field of fitness equipment, and particularly discloses a rhythm machine which comprises a fixed machine frame and a swing machine frame rotationally arranged on the fixed machine frame, and a left pedal and a right pedal are rotationally arranged at the two ends of the swing machine frame correspondingly; connecting rods are arranged at the bottoms of the left pedal and the right pedal respectively, the other ends of the connecting rods are rotationally connected with one ends of rockers, and the other ends of the rockers are rotationally connected with the fixed rack; the swing rack comprises a left swing arm and a right swing arm which are fixedly connected and have the same length, the left swing arm, the left pedal, the connecting rod, the rocker and the fixed rack form a four-connecting-rod rocker mechanism, and the right swing arm, the right pedal, the connecting rod, the rocker and the fixed rack form another four-connecting-rod rocker mechanism; and the stress of