Matt Damon's Cousin is Training BFF Ben Affleck for 'Batman vs. Superman: Dawn of Justice'!
Matt Damon is all sweaty after getting in a good workout at his gym on Wednesday (June 4) in Beverly Hills, Calif.
Jamie, along with trainer Walter Norton Jr. and a group of other sweat sergeants, have been on set with Ben running drills with him to prep him for the Caped Crusader.
Matt called Jamie “a stud of a trainer.”
10+ pictures inside of Matt Damon leaving the gym all sweaty…