From Scrawny to Brawny: How Hollywood Shape-Shifts for Movie Roles

At the end of November, pictures of Jake Gyllenhaal in his upcoming 2015 film Southpaw went viral because he was unrecognizable, thanks to a newly ripped boxer’s physique. We tracked down a few of the pros responsible for sculpting some of Hollywood’s hottest bodies to find out exactly what it takes.  Think of any superhero movie that’s been released in the last 10 years and there’s a good chance Bobby Strom and his wife Alicia had a hand in transforming the leads into ass-kicking, six-pack-sporting machines. The duo trained Scarlett Johansson for Iron Man 2, Jessica Biel for Blade Trinity, and Blake Lively and Ryan Reynolds for Green Lantern, to name just a few.