Prepare yourself for the most brutal of all row variations: the Kroc Row.  First implemented by Matt Kroczaleski for upper back development that explodes the latissimus dorsi, the Kroc row is a variation of the common dumbbell row.  There is no reason to keep doing controlled, low weight, low rep dumbbell rows when you could be doing Kroc rows instead with the heaviest dumbbells you can lift. What the Hell are Kroc Rows Matt Kroczaleski began performing his own variation of the dumbbell row when he stopped doing dumbbell rows and noticed...