The Body-Solid G8I is the most complete Iso-Flex™ Gym available. The G8I is built around the 3-Dimensional Independent Motion Arms. The freedom of the arms allow you to work the primary (targeted) muscles as well as the secondary (stabilizer) muscles for more natural, more defined muscle development. The unique Iso-Flex arms make doing chest presses, shoulder presses, pectoral flys, and resistance ab crunches a breeze. You don’t even have to get up. Just reach around, move the selector pin and keep going. Combine that with the Swiveling Dual Pulley Lat Station to do conventional pulldowns as well as independent crossover or diverging pull downs. The Chest Supported Mid Row Station uses the independent press arms and adjustable Durafirm™ back pad to give you support and balance isolating your mid and lower lats for a more targeted workout.