Picture of person on rope reaching out for platform,

To uncover the secrets of longevity, Chris Hemsworth put his body on the line

In his new Nat Geo series, 'Limitless,' the actor dangles from a rope high above a canyon and surfs frigid waters—all to test extreme strategies for living longer.

In his new National Geographic series, Limitless With Chris Hemsworth, the actor completes a test of the body’s reactions to fear: He climbed up a hundred-foot-long rope suspended from a cable car, high above a canyon floor in Australia’s Blue Mountains.
Photograph by CRAIG PARRY, NATIONAL GEOGRAPHIC FOR DISNEY+

Chris Hemsworth plunged into Arctic waters, dangled a thousand feet over a canyon while climbing a rope, fasted for four days, and prepared for his own eventual death—all in the pursuit of living longer.

In Limitless With Chris Hemsworth, a six-part National Geographic documentary streaming on Disney+, the actor doesn’t just rely on a physique honed during a decade of playing Thor in movies. He challenges mind as well as body in a quest to develop habits that might extend life. His, and ours.

Experts guide him. Some of their tips sound familiar—eat less, exercise more—but others, less so: Accept reality. Harness stress. (What wild baboons can teach us about aging)

Before this project, Hemsworth had

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