Well, it may be ironic to admit, but I did hurt my back recently, but for a very different reason. I was using 695 lbs and simply had prolonged a heavy cycle of lifting longer than I should have. I knew better and did not heed the warning signs.
My style of deadlifting relative to my back position is really quite safe. In fact, it is a style advocated by one of the greatest deadlifters of all time, Bob Peoples.
don't forget one of the best of OUR time currently.. konsti k.

