In recent years, more and more fitness equipment has been imported from abroad. From the perspective of cost performance, the fitness equipment in Wo Jia is quite good. All the strength instruments in Wo Jia conform to the anatomical principle. The shape of the backrest can support the spine of the exerciser, better adapt to the body shape of the exerciser, provide necessary soft or hard support, and help them maintain a correct sitting posture in practice. For another example, the application of biomechanics in the production process can make athletes reproduce the physical trajectory within the selected range of motion, and the resistance remains unchanged throughout the range of motion, thus bringing a hearty sense of motion. "