In order to create authentic and captivating scenes, many actors have relentlessly strived and endured rigorous training to excel in their roles. They are willing to engage in intense workouts and push themselves to the limit to serve their characters.
Alexander Skarsgård

To achieve the sculpted physique resembling Tarzan, Alexander Skarsgård underwent intense training and adhered to a strict diet regimen. In the initial 3 months, he consumed 7,000 calories per day, mainly consisting of meat and potatoes.
Later on, he had to divide his meals into 6 sessions, which drove him crazy.
'I would pace around and constantly check the clock to see when I had to eat,' he recounted. After completing the film, the actor cried because he could finally eat whatever he wanted.
Natalie Portman

Natalie Portman aimed to stun fans with her sculpted physique in Thor: Love and Thunder. Months before filming commenced, the Black Swan star hit the gym fervently, focusing on muscle-building exercises she hadn't tried before.
In an interview with Women's Healthy Mag, the actress expressed her dedication to the role. As a vegetarian, she sought to bulk up by consuming plant-based proteins.
Brad Pitt

In preparation for his role as a sergeant in Fury, Brad Pitt underwent rigorous training. Despite being older than his fellow actors, the American actor willingly participated in grueling workouts.
'The workouts were designed to push us to our limits. We endured cold, exhaustion, pain, sometimes waking up at 5 a.m., pulling night shifts,' Pitt told Express.
Bradley Cooper

As one of Hollywood's most charming actors, it's a rare sight for fans to witness Bradley Cooper in a fuller form. The actor shed his usual allure to portray a different image in the movie American Sniper.
According to Cooper, the weight gain was grueling. 'It was a big shock to me. Eating pizza and sweets is one thing. Loading up on 6,000 calories a day takes a toll on the body,' he said. Cooper's personal chef had to prepare 5 meals a day, along with additional energy bars to maintain the weight.
By AP, Marvel Studios; Village Roadshow
