[quote author="kronik85" date="1148103783"]
for posterior chain training start doing more goodmornings. no exercise out there to replace it.
That is highly debatable. They are a very good posterior chain exercise, but there are many others that can accomplish the same task. It is certainly not the end all to strengthening your propulsion system, but instead just a lead in to others.
*shrug* as you said. it's highly debatable. in the present context of detrimental squats due to losing the bar drifting forward, which other exercise comes close to mimicing the work the posterior chain does to get it back into place?