The present invention relates to a fitness device capable of lifting and lateral movement by a user standing on a plate for physical fitness, and also capable of rotating the rotating plate left and right, so that a waist twist is also possible, and more specifically, Upper and lower platforms arranged at intervals of the upper and lower sides; Struts disposed therebetween to separate the platforms from each other; A restore for elastically restoring the spacing of the platform; And a horizontal holding means; wherein the upper and lower ends of the strut are hingedly connected to the upper and lower platforms, respectively, so that the vertical movement and the side movement are interlocked, The horizontal holding means is provided with a tooth difference at each hinge connection portion, and a horizontal transmission gear having a rotation shaft on the strut is interposed therebetween, so that the transmission gear rotates in one direction when tilted to the side, Accordingly, the top gear is configured to maintain the horizontal of the upper platform on the principle of rotating in the opposite direction, and a restore tension part is formed on the body of the gear together, and the restore is fixed to the restore tension part.
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