... the level, your changing the targeted Muscles AND the Resistance. THERACK Workout Station is the only piece of equipment that takes ... exercises with state-of the-art engineering." Exercise magazine - described THERACK as "The perfect home gym". FitnessRX - says "This tough ... market and it kicks Butt!" And, Planet Muscle magazine - Awards THERACK with the "Seal of Certification". THERACK (TVF2154)