VIDEO: James Harrison pelvic-thrusts 528 pounds

If you weren't already convinced that Pittsburgh Steelers linebacker James Harrison is a beast, here he is lifting 528 pounds with his pelvis.

Harrison, who turns 38 in May, has said he wants to wait and see if his body can withstand another season before committing to the Steelers. By the looks of things, though, his body is holding up just fine.