Football linemen are motivated by a more complicated, self-determining series of factors than the simple fear of humiliation in the public gaze, which is the emotion that galvanizes the backs and receivers.
I've caught fish as big as I am. I've caught marlin close to 300 pounds.
At 285 pounds, I was extremely strong, and it was all usable strength that I could direct against opponents, not like that of a weightlifter, whose feats of power are all restricted.
I can ski out of my back door.
I was captain and should have set the example. I would lift a minimum of weights. Mine was natural physical strength. I always thought quickness and agility were much more important.