This may be old news for some but I didn't know this one:
Safety Brian Dawkins has many victims on his hit list over his career, including Michael Vick and WR Ike Hilliard Eagles free safety Brian Dawkins is built like a boxer, has the same quickness and packs a similar punch.
Dawkins trains during the offseason with "No Holds Barred" ultimate fighting champion Tim Catalfo. That training has enhanced Dawkins' fierce competitiveness and added to his speed and strength, allowing him to be the hardest hitter in the league.
Anyone know any other NFL players that train?