W Magazine<\/a>, Sweeney revealed how she got ready for the role, saying she spent months training and gained more than 30 pounds in the process.<\/p>\n\u201cMy body was completely different,” she said. <\/p>\n
\u201cI loved it,\u201d Sweeney added. \u201cI came onboard to play Christy, and I had about three and a half months of training. I started eating. I weight-trained in the morning for an hour, kickboxed midday for about two hours, and then weight-trained again at night for an hour.\u201d<\/p>\n
![\"Christy](\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2025\/07\/christy-martin-boxing-mc-250723-03-956e2e.jpg\")
Christy Martin and Sydney Sweeney pose during the Boxing Hall of Fame Induction Ceremony at the International Boxing Hall of Fame on June 8, 2025 in Canastota, New York. Ed Mulholland \/ Getty Images<\/p>\n
Sweeney shared that she went up four sizes and \u201cdidn\u2019t fit\u201d into any of her clothes anymore.<\/p>\n
\u201cI\u2019m usually a size 23 in jeans, and I was wearing a size 27. My boobs got bigger. And my butt got huge. It was crazy! I was like, Oh my God,\u201d she said. \u201cBut it was amazing: I was so strong, like crazy strong.\u201d<\/p>\n
Writer and director David Mich\u00f4d also spoke to W Magazine about Sweeney\u2019s dedication.<\/p>\n
\u201cSydney trained her butt off to play the part. The beauty of Sydney is that she turned up to work every day with her tail wagging, ready to go. No matter how tough it was, she was like a ray of sunshine,\u201d he said.<\/p>\n
Martin, 57, had an incredibly successful career as a boxer. She was undefeated for a decade and also became the first woman boxer to make the cover of Sports Illustrated.<\/p>\n
While talking to the New York Times<\/a>, she said she had \u201cno road map” to success.<\/p>\n“I had no path,\u201d she said. \u201cI just kept fighting. I kept growing.\u201d<\/p>\n
Martin also said that boxing gave her a home and helped with her self-confidence.<\/p>\n
\u201cYou can be aggressive, you can be strong, you can be all those things,\u201d she said. “That\u2019s where I could be me.”<\/p>\n