This elliptical trainer works to keep your muscles and joints from straining while working out. The Synchro will keep your coordination and balance in check and will help you reduce fat mass while improving your muscles. It has a design with a Biostrength body and can handle many resistance levels. The 700 versions can work with fast track controls. This design works to improve your respiratory and cardiovascular systems and will train your legs while clearing out old adipose tissue deposits all around your body to keep it healthy.