... especially : extreme degree of strength, force, energy, or feeling 2: The magnitude of a quantity (as force or energy) per unit (as of area, charge, mass, or time) Synonyms: fanaticism, ferocity, fire, fury Intensity can be measured in three ways. How much effort a player gives each down, or his "motor", if he can ignite his teammates as a vocal leader, and the player feeds on his enemy's fear and hungers for contact. Don't be fooled by these men's mellow demeanor off the field. These players are the definition of wolves in sheep's clothing, or more like wolverines in sheep on steroid's clothing. Here are the most intense players in the NFL. "You try to stay within the rules for the sake of the game, but you can always turn up the intensity...

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