Ben Affleck recruits Damon's cousin as he bulks up for Batman

Ben Affleck has hired pal Matt Damon's cousin to help him get into top shape for his new role as Batman in the Man Of Steel sequel.

Affleck has recruited a group of top fitness instructors from his native Boston, Massachusetts to help him bulk up for Batman vs. Superman: Dawn of Justice - and one of them is Damon's relative Jamie.

All the trainers have one thing in common - they're all from the Institute of Performance Fitness in North Reading, Massachusetts, according to The Hollywood Reporter.