First 12 were done in about 30 seconds. Then my legs were gone. I was pulling it stiff legged style, screaming like an animal in a packed gym. Rep #17 got dizzy, got on my knees, got up, did one more. REp #18, got stuck halfway. Couldnt feel my legs or back,.. kept pulling and pulling, and shrugged it hard at the end. That was it for me. Ran to locker room