Was watching a few youtube videoes today and I am surprised how many people tear their bicep from doing underhand/overhand.
Totally helps my grip doing it this way.
Having your bicep tear though is a pretty serious thing. Might heal, but most likely will never be the same even after surgery.
anyone ever worry about this? Not just from under/over deadlifts either. Preacher curls, underhand barbell rows, etc.