Jurassic World Fans Wondered Why Jonathan Bailey Got So Jacked For Rebirth, And He Provided A Reasonable Explanation

In 2024, Jonathan Bailey appeared in a now-viral social media post curling dumbbells in a red tank top while preparing for his work in the upcoming Jurassic World: Rebirth. Bailey's arms were looking totally jacked, to say the least. However, some fans of the Jurassic Universe had a ton of thoughts, as some folks were baffled (and slightly thirsty). Now, Bailey is providing a reasonable explanation for his physical transformation for the 2025 movie release.
The original image, shared by Film Updates on X, quickly racked up millions of views and a tidal wave of commentary. Many assumed it was an over-the-top bit of method actor vanity, but Bailey, as it turns out, had a solid reason for the gains. In a recent British GQ profile, the actor sheds light on the intense physical prep for Rebirth. According to him, it was spurred by a suggestion from his co-stars in regard to surviving the production days:
Scarlett and Mahershala were like, ‘You have to go to the gym so you can sustain it and get through the day.’ You’re constantly running with the energy that you’re about to be chomped by a T-Rex.
The upcoming action movie, shot on location in the mangroves and fields of Krabi, Thailand, demanded stamina. Bailey joins the stellar Jurassic World Rebirth cast in the role of Dr. Henry Loomis, a paleogeneticist enlisted by a private pharma company to extract dinosaur DNA for potential medical breakthroughs. It's a part that involves a ton of running, rock climbing and, apparently, at least one scene where Loomis works out on screen. The Fellow Travelers star teased:
You’ll find out. There’s something about his character he talks about. He goes to the gym and it’s a moment in the story!
Ahead of this explanation, fans were quick to poke fun at the actor's training. Here’s a quick roundup of standout reactions from X users:
- “The dinosaurs are CGI he doesn't need to do all that
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