Chris Hemsworth is staying true to his mentality, the one that makes him work his body as hard as possible to maintain an optimal physical shape for the movies, so that he can continue playing the superhero Thor.
But, now he's also been involved in a documentary series called 'Limitless With Chris Hemsworth', in which he aims to test himself through a variety of physical challenges as he explores different ways of living around the world, learning how to handle stress, or going through different levels of strength.
Chris Hemsworth's intense workout
Chris Hemsworth decides to fast for four days
He even undertakes very delicate eating habits, while he also fasted for four days under the guidance of Dr. Peter Attia.
"I feel pretty weak trying to walk up the stairs, trying to walk down the hall, I feel like it's tough to catch my breath," he said.
"I can't even think... I'm losing it."
"I'm trying to get my ketones going again by working out, but I'm feeling nothing.
"Oh, and did I mention that I'm feeling really, really hungry?"
Dr Attia made it clear that he does not think Hemsworth enjoyed the fasting experience.
"I don't think Chris has found this to be a pleasant experience at all," said Attia.
"But a big part of fasting is understanding why you're doing it and that's the key to tolerating this thing. It's being able to focus on the motivation behind the fast."
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