Chris Hemsworth may be best known as the mighty Thor in the Marvel Cinematic Universe, but his latest journey swaps superpowers for self-discovery.

The 41-year-old Australian actor returns in Limitless: Live Better Now, the second season of his National Geographic series, where he once again pushes himself far beyond the comfort zone—both physically and mentally.

“The first season almost killed me,” Hemsworth jokes in an interview with the BBC. “I swore I’d never do it again.”

Season one saw him undergo extreme trials—from fasting and ice baths to high-altitude crane walks—all in the name of exploring longevity. Now, he’s back with a new perspective and even bigger questions about life, aging, and what truly matters.

Facing Fear and Finding Purpose

In season two, Hemsworth continues to test his limits but moves beyond pure physical endurance. With guidance from friends like Ed Sheeran (yes, really), he tackles the unfamiliar—learning to play drums and even scaling a 600-foot Alpine dam, inspired by the fearless spirit of his children.

“When you’re in uncomfortable environments, facing risk or adversity, you realize how fragile life is,” Hemsworth says.

This mindset shift was sparked in part by a major revelation in season one: a genetic test revealed Hemsworth carries two copies of the ApoE4 gene, making him significantly more likely to develop Alzheimer’s disease.

“It was a wake-up call,” he explains. “But it also became an opportunity to spread awareness and help others understand the risks and possibilities.”

Health, Happiness, and the Limits of Biohacking

While Hemsworth is now more invested in living well, he’s cautious about the growing trend of biohacking—the pursuit of enhanced longevity and performance through extreme health routines.

He contrasts his approach with that of tech entrepreneur Bryan Johnson, who’s poured millions into reversing his biological age through a rigid routine of supplements, plasma therapy, and strict living.

“I’m curious, but I don’t want to be consumed by it,” Hemsworth says. “What’s the point of living longer if you’re lonely or joyless?”

Instead, Hemsworth strikes a balance: investing in his health without sacrificing spontaneity and connection.

“Life isn’t meant to be boxed in. If you chase immortality, you might miss what actually makes life worth living.”

Mortality, Meaning, and Family

Rather than fear death, Hemsworth believes embracing its inevitability gives life value.

“If you knew you had 200 years to live, you’d probably take everything for granted,” he says. “Knowing life is fragile reminds you to savor every moment.”

This theme runs deep in Limitless, especially as Hemsworth reflects on his role as a father and husband. He lives in Byron Bay, Australia, with his wife, actress Elsa Pataky, and their three children—reminding him that his choices impact more than just himself.

“I want to be around for my family, to inspire my kids, and hopefully help others do the same,” he shares.

The heartfelt response to the first season—particularly from families—helped convince him to take on another round.

What’s Next—On Screen and Off

Even as Hemsworth leans into introspection and personal growth, he hasn’t left the cape behind just yet.

He’ll reprise his role as Thor in the upcoming Avengers: Doomsday, slated for release in late 2026. Whether another standalone Thor film follows remains to be seen.

“I’m still unpacking that,” he admits. “I love the role, but we’ll see where it all leads.”

In the meantime, Limitless: Live Better Now offers fans a raw, revealing look at Hemsworth’s personal evolution—far removed from the superhero armor but every bit as compelling.