Hi Chris, thanks for your comment. People respond differently to deviations in technique. I don't want to go the extreme by instilling fear in our lifters' minds that "once you round your back, it will be a catastrophe!" The risk of injury will always be there even on a flawlessly performed lift because it's not a single variable algebra. However, we believe and enforce that good form, which is mechanically efficient and performed consistently, will yield higher performance benefits. -Marvin