Sylvester Stallone does not believe the extreme bodies seen in superhero movies should be treated as natural or permanent. During a live conversation in New York, he said steroids have become part of the temporary physical transformation some actors use for those roles.

He was speaking from experience. Stallone rebuilt his own body for Rocky III and says the process included steroids, a punishing diet, heavy coffee intake, and an attempt to push his body fat far below a normal range.

What did Stallone say about superhero bodies?

Stallone asked the audience whether they really believed superhero physiques were natural, then compared the transformation to another piece of a character’s wardrobe.

“It’s almost like putting on part of a costume.”

His point was not that every actor uses the same method. He did not name or accuse anyone. He was talking about a film culture that rewards bodies designed for a few shirtless scenes, posters, and action shots, even when those bodies cannot be maintained safely year-round.

Sylvester Stallone walks with correspondent Tracy Smith in New York during a 2026 interview.
Stallone discussed his career and new memoir in a separate 2026 interview with Tracy Smith. Image: CBS News.

What did Stallone do for Rocky III?

Stallone said he ate tuna, drank as many as 30 cups of coffee a day, used steroids, and drove his body-fat level down to what he remembers as 2.6%. That figure is Stallone’s recollection and has not been independently verified.

The result gave Rocky a sharply different look from the softer, heavier fighter in the first two films. On screen, it helped sell the idea that Rocky had become a polished celebrity athlete before facing Clubber Lang. Off screen, Stallone now describes the preparation as an extreme transformation rather than a normal fitness plan.

His comments should not be read as training advice. The diet, stimulant intake, and drug use he described carry serious health risks and were built around a short production window.

Sylvester Stallone speaks during a 2024 CBS interview about Tulsa King.
Stallone has continued acting in film and television decades after Rocky III. This is an archival 2024 interview frame. Image: CBS News.

Why is Stallone talking about it now?

The comments came during a September 28 conversation tied to The Steps, his new memoir. The book looks back at the career decisions, physical punishment, and stubbornness behind Rocky and the films that followed.

Stallone has also been revisiting the beginning of that story. In a recent interview, he explained why he refused $360,000 unless he could play Rocky himself. His new comments cover what happened after the role changed his life and the pressure to keep changing his body for the screen.

The superhero comparison will start an argument, but his own example is the sharper part of the conversation. Rocky III gave audiences an unforgettable image. Stallone is now telling them what it cost to build it.