After Being Called “Butterface” and “Chunky,” Sydney Sweeney Fires Back With Raw Footage of the Brutal Fight Camp for Her Role as Boxing Legend Christy Martin

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Julien Raby

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In a recent People.com article, actress Sydney Sweeney sent a powerful message to body shamers—using grit, muscle, and a heavy dose of tire-flipping.

After being targeted by online critics for her body, Sweeney clapped back the best way she knows how: by showcasing her intense physical transformation for an upcoming biopic on legendary boxer Christy Martin.

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The Emmy-nominated star, best known for her roles in Euphoria and Anyone But You, didn’t just post a few gym selfies.

She released a gritty montage that juxtaposed cruel internet comments with raw footage of her boxing, lifting, and sweating through grueling workouts. It wasn’t just a rebuttal. It was a statement.

Taking Back the Narrative—Through Strength

On December 13, Sweeney uploaded a striking video to Instagram featuring dozens of screenshots from internet trolls criticizing her bikini photos.

“Quite frumpy isn’t she,” read one.
“Nothing to see here other than an average chunky Yankee girl,” said another.

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The footage then cuts sharply—Sweeney is seen flipping giant tires, throwing punches, flexing biceps, and pushing herself like a true athlete.

“Well, the cat’s out of the bag thanks to some paps in bushes,” she wrote in the caption. “So here’s a little BTS from my film I’m working on right now.”

That film is a biopic based on Christy Martin, one of the most groundbreaking figures in women’s boxing. For Sweeney, the physical transformation wasn’t for appearances—it was to honor the legacy of a woman who survived brutal fights in and out of the ring.

Why Christy Martin’s Story Matters

Christy Martin, now 56, wasn’t just a boxing icon. She was the first woman inducted into the Nevada Boxing Hall of Fame in 2016, and the first female boxer to grace the cover of Sports Illustrated in 1996. She paved the way for female athletes in a male-dominated sport.

But her story goes far beyond the ring.

In 2010, Martin was the victim of a horrific attempted murder by her then-husband, James V. Martin. She was stabbed multiple times and left for dead. Martin survived, and in 2020, she became the first woman inducted into the International Boxing Hall of Fame.

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  • Comfortable grip that makes high-rep workouts easier to handle

“This story is so much bigger than just a film,” Sweeney wrote. “It’s a testament to resilience, survival and finding the strength to keep fighting.”

A Role That Demanded More Than Acting

To bring Martin’s story to life, Sweeney underwent months of intense training.

According to Deadline, she “grappled and did kickboxing from 12-19 years old”—but preparing to portray a professional boxer was an entirely different challenge.

Her transformation included building muscle, learning real boxing technique, and developing the mental toughness to match.

Behind-the-scenes clips show her throwing powerful jabs, pounding bags, and getting in fighting shape under the guidance of expert trainers.

The actress even dyed her signature blonde hair brown to resemble Martin more closely.

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  • Solid cast iron build that feels stable and lasts for years
  • Comfortable grip that makes high-rep workouts easier to handle

“Her journey is a testament to resilience, strength, and hope,” Sweeney said. “I’m honored to step into her shoes to share her powerful story with you all.”

Sweeney’s Message to Body Shamers: Watch Me Work

The video wasn’t just about showing off muscles—it was about reclaiming agency. It was a direct response to a culture that criticizes women’s bodies, especially in the public eye.

Rather than respond with words, Sweeney let her work speak for itself.

“I’ve been immersed in training to bring to life the story of an incredible woman,” she wrote. “A true champion who fought battles both inside and outside the ring.”

The juxtaposition of cruel comments with empowering workout footage hit hard—and resonated with fans. The post quickly garnered support from fellow actors, fitness enthusiasts, and anyone who’s ever faced unfair scrutiny over their body.

The Emotional Weight of Filming

On November 25, Sweeney announced she had wrapped filming. She described the experience as “emotional” and “transformative.”

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  • Full-body training with one weight using swings, squats, and presses
  • Solid cast iron build that feels stable and lasts for years
  • Comfortable grip that makes high-rep workouts easier to handle

“Christy’s journey is so deeply inspiring,” she wrote, adding that having Martin on set brought her to tears on multiple occasions.

“There were moments on set where I’d glance over at her standing by the monitors, cheering us on, and I’d just become so emotional,” she shared. “Knowing what she’s endured—it made me want to cry.”

Directed by David Michôd and co-starring Ben Foster, Merritt Weaver, Ethan Embry, and Katy O’Brien, the biopic has yet to be titled, but it’s already making headlines.

Why It All Matters

Sweeney’s post wasn’t just a social media flex. It was a moment of empowerment—not just for her, but for women everywhere.

It challenged the notion that beauty fits into a narrow, fixed ideal.

It spotlighted a real-life survivor who shattered records, broke barriers, and refused to be defined by trauma.

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  • Full-body training with one weight using swings, squats, and presses
  • Solid cast iron build that feels stable and lasts for years
  • Comfortable grip that makes high-rep workouts easier to handle

And it showed that strength—real strength—comes from pushing past criticism and showing up every day, fists raised, ready to fight.

If the footage is any indication, Sydney Sweeney isn’t just acting the part of Christy Martin.

She’s earning it.

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