I fear you may have misunderstood my post. Like I said, some people physically can not do that ROM. For those, I understand. For example, my dad has had 8 total knee surgeries. He literally can't squat anymore. Pass. Mid 20's-30's man who claims it hurts his knees and is just being a baby isn't an excuse to me, and believe me, at my gym anyways, that's 90% of the people in the squat rack. Again, I have had a complete knee reconstruction at 18 years old. I'm 23 now and I can tell you, it was a long and uncomfortable road to recovery and I do ATG without discomfort or fear of injury. My knee surgery comprised of an acl, mcl, LCL, meniscus, PCL and fractured the platella bone. (Big motocross injury). They graphed from a pig tendon and my hamstring to repair it all. In a wheel chair for 4 months. My point is merely too many people claim bad knees and I believe for a lot of them, it's just an excuse. Again, there are a lot with physical limitations and those people rightfully do not need to be doing ATG. I still advocate for ATG if possible.