Elliptical Cross Trainers are cardio vascular machines that mimic the normal elliptical motion of the foot, the extension of the leg, and the rotation of the hip during walking or running. This elliptical motion simultaneously works the upper body and lower body. As the feet go through their elliptical motion, the hands grip the moving handlebars, exercising the arms, and the results will be more efficient. Because elliptical trainers do work the upper and lower body simultaneously, the amount of energy expended is optimized.
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