I haven't watched the video yet. I'm not taking anything away from anyone in thier explanations. I have seen with my own eyes NON-mds lifters fail, too. Everyone is so hung up on the MDS being the issue. It might be for the MDS lifters that fail, but, what about the NON-mds lifters that fail? This has been discussed ten ways from Sunday. I wish someone had a 100 percent explanation. I have theories that seem to get dismissed.