Only a single adjustment is needed for the user of the Discovery™ Series Selectorized Line Back Extension to begin exercising. The intelligent design includes a contoured pad to support the back for proper spinal biomechanics during exercise. The fixed foot plate provides a stable foundation for users of all sizes. Very little time is needed to get going on this unit. One single adjustment of the movement arm allows for the user to get in and start working out. The contoured back pad provides the proper support to ensure back muscle activation during the workout.