Natalie Portman’s trainer reveals how the star got so ripped for Thor

Natalie Portman’s trainer has revealed how the actress managed to build so much muscle before filming Thor: Love and Thunder.

Natalie Portman endured almost a year of an intense diet and gruelling exercise program in preparation for her latest big screen outing.

The Oscar-winner trained for 10 months and stuck to a strict high-protein meal plan in order to shape up for Thor: Love and Thunder.

“Natalie did five sessions a week and did not miss one session for the whole time period we trained,” Portman’s trainer Naomi Pendergast told Us Weekly in an interview published Thursday.

The fitness trainer explained that 41-year-old Portman’s major goal was to bulk up in her arms and really get shredded in the abdominal area.

Natalie Portman and Chris Hemsworth in Thor: Love and Thunder.

“The initial goal was to build arm and abdominal definition,” Ms Pendergast told the website. “We also worked on stability and agility for injury prevention as Natalie had some dynamic stunt scenes that required her to move, twist and land in various positions.

“I was also really pleased she got through the challenging stunt process without any injuries.”

Her workouts consisted of boxing, skipping, core work and weightlifting.

And because she was working out so rigorously, Portman, who is a vegan, had to switch up her diet so she could ensure enough protein intake to gain muscle as opposed to losing weight.

Ms Pendergast shared that during filming, Portman would eat a vegan-based breakfast of oats and berries and a protein shake and her snacks on set would consist of fruit, nuts and salads. For lunch, Portman would have a vegan falafel dish with another protein shake and for dinner she’d eat vegan curry and a third protein shake.

“This amount of food was obviously way more than Natalie normally eats, but it was essential for her to maintain this throughout filming to keep the muscle she had developed,” Ms Pendergast said.

Natalie Portman at a screening of Thor: Love and Thunder in London this week.

In the film, the actress plays Jane Foster, the Thunder God’s ex-girlfriend.

The RPX Fitness director explained that while she provided the guidance, it was Portman’s dedication that helped her meet her fitness goals for the Marvel film.

“I provided the exercises and guidance, but she did the rest,” Ms Pendergast said. “She is focused, determined and humble. Natalie turned up every session that was scheduled for the 10 months and gave 100 per cent, even on the days she was tired.”

The actress discussed her new muscular figure, telling Variety that she saw herself in a new light.

“On Black Swan, I was asked to get as small as possible,” Portman recently told Variety. “Here, I was asked to get as big as possible. That’s an amazing challenge – and also state of mind as a woman.”

The star called the fitness challenge ‘amazing’. Picture: Getty Images

She added: “To have this reaction and be seen as big, you realise, ‘Oh, this must be so different, to walk through the world like this. When you’re small – and also, I think, because I started as a kid – a lot of times I feel young or little or, like, a pat-on-the-head kind of person. And I present myself that way, too, because of that.”

Portman’s co-star Chris Hemsworth also had to go the extra mile to prepare for his role as Thor.

As Page Six exclusively revealed, Hemsworth, 38, had to eat eight meals a day to look like the God of Thunder.

Thor: Love and Thunder is in Australian cinemas now.

This article originally appeared on the New York Post and has been reproduced here with permission

Originally published as Natalie Portman’s trainer reveals how the star got so ripped for Thor