Image: Evan Agostini/Getty Images

Jason Momoa is a man-mountain: 6 foot 4 inches of mostly muscle. The Aquaman</em star weighs in at 238 pounds, and very little of that is fat, as anyone who has studied his sculpted physique (including a chest that measures 50 inches) can attest. But Momoa didn’t always rock those 19-inch guns. As a younger man, he cut a more svelte figure, and it all grew out of a kid who looked very different.

Image: Ron Galella/Ron Galella Collection via Getty Images

Nowadays, Momoa stays in great shape with an intense exercise routine. He’s not a late riser, up at dawn to start working out. The Aquaman star prefers cardio, and you’ll often see him climbing rocks. This helps him keep trim because scaling a hill is harder if you’re carrying any extra weight. And of course, weightlifting has piled on the muscle for which Momoa is famous.

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