Here’s how stars like Arnold Schwarzenegger, Sylvester Stallone, Dolph Lundgren, Tom Hardy, and Hugh Jackman got their body transformations done. . The 25 Most Intense Hollywood Bulk-ups of All Time It’s a challenge as old as the movies themselves: Hitting the gym to bulk up, add muscle, and get ridiculously shredded for a film role. Stars have pulled off incredible body transformations and Hollywood bulk-ups over the years....