The BodyCraft K1 is for serious athletes and beginners too. For the more advanced users, there is a 2:1 ratio that is available on the 200lb. cast iron weight stack. This ability to double the workload allows for chest, back, shoulder presses and squats with up to 400 pounds of resistance! For novice users, the BodyCraft K1 Gym is fantastic because it has an easy to adust bench which transforms from decline, to flat, to incline, to vertical, and their are no cable changes needed!