Chris Hemsworth Reveals He Wanted Smaller Biceps for 'Extraction 2'

Chris Hemsworth is at his physical best in new Netflix movie Extraction 2. He's never been fitter and never looked better, but surprisingly going into production he was concerned he had too much muscle.

Luke Zocchi – Hemsworth's lifelong friend and trainer – has been in charge of keeping the actor in shape throughout his career. You may have seen him on Hemsworth's Disney+ series Limitless, or giving workout tips on fitness app Centr. But prior to the filming of Extraction 2, the pair realized that the approach and routines they had been using for the past decade needed a rethink.

‘Thor required mostly aesthetic bodywork,’ Hemsworth told GQ UK. ‘Whereas for Extraction 2, far greater athleticism was needed.’

Hemsworth turns 40 this year, and what was being asked of him for the sequel to the Netflix hit implied a definite change of priorities. "When we started it was more, more, more and harder, harder, harder," says Zocchi. "But Extraction 2 required so much more of him physically with stunts and all the action scenes so his sessions needed to be based around recovery and really trying to look after him."

To enforce that change in Hemsworth's routine, Zocchi turned to the experience of Michal Novotný. In addition to working with the Czech Republic national team, he is a professor in the Master of Sports Physiotherapy at the European University of Madrid, and his approach was to treat him as if he were a professional athlete.

"He told me: "Guys, you need to bring it right back. This man is not resting nearly as much as he would if he was a pro athlete. He's on set filming all day, then he's trying to train at the end of the day,'" recalls Zocchi.

For Extraction 2, the instructions were simple: "He needed to not have such big muscles," Novotný tells GQ, with the goal of muscle definition and paying close attention to the back pain that has plagued Hemsworth over the years. One day at the gym, Hemsworth asked Novotný what the best way to work the biceps was in order to be more defined and smaller.

"It's important to work the biceps along with the upright deltoids in the fly position," says Novotný. "It's not to have a bigger biceps, but the opposite. Hemsworth wanted to have smaller, more defined biceps."

Zocchi says this was a revelation for Hemsworth, as small tweaks to the techniques improved along the way. The Czech coach made small but significant changes to Hemsworth's routine. The first was to work the biceps not as an isolated muscle, but as a muscular chain, either with front deltoids and abdominals, or with lateral deltoids and lateral abdominals.

"I also wanted to improve the puntum fixum (holding point) of biceps on core muscles," he says. "Here the idea is to work biceps contraction together with contraction on core muscles. That means I put him into static core positions while working his biceps using weights."

Lastly, he sought to work the biceps along with the legs in a dynamic core with lateral steps and unilateral biceps, front lunges with bilateral biceps, and backward lunges with unilateral biceps. In all of them a resistance band was used between the legs, and another elastic one that went from the legs to the arms.

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