He Benched More Than War Machine — Robert Downey Jr. as Iron Man

According to Terrence Howard, he and Robert Downey Jr. competed physically on the set of 'Iron Man.'

Howard said in interviews that the competitions always ended up happening in the weight room. "I'm 40-50 pounds heavier than him, so I'm lifting and I push up about 225 and knocked it out ten times. Robert wanted to go about 235, and he did it, so I push it up to about 245... Robert and his competitive ass almost tore my shoulder trying to keep up with him!"

Too bad they didn't get to continue the war for 'Iron Man 2'