Sylvester Stallone in Rocky III.Photo:United Artists/Kobal/Shutterstock

Sylvester Stallone Rocky III - 1982

United Artists/Kobal/Shutterstock

Rocky Balboa is one of the most famous characters in movie history, but it wasn’t easy forSylvester Stalloneto get into fighting shape for the role.

“My entire breakfast would be maybe two [small] oatmeal cookies made with brown rice and 10 cups of coffee because I wanted to keep my body fat down to 2.8 percent.”

His diet was so restrictive, Stallone, 76, says it impacted his memory.

Sylvester Stallone in 2022.Jamie McCarthy/Getty

Sylvester Stallone visits SiriusXM at SiriusXM Studios on November 11, 2022 in New York City.

Jamie McCarthy/Getty

“I was forgetting my phone number. I was eating just tuna fish. My memory was shot, it was completely gone,” Stallone says of his experience making the film. “I was getting all kinds of debilitating physical effects. But it was for the cause.”

These days, Stallone says he has pulled back on the coffee intake — “I keep getting reflux, so I have to cut it down,” he says — and breakfast is a family affair, with wife Jennifer Flavin, 54, taking charge.

“My wife is focused on breakfast. It’s amazing,” he tellsThe Wall Street Journal.“It’s avocado, four eggs, cottage cheese, three slices of watermelon and grapes.”

The pair — who reconciled last yearafter filing for divorce— chronicle their daily lives in their Paramount + reality show, The Family Stallone, which also features their three daughters, Sophia, 26, Sistine, 24, and Scarlet, 21, who often tease their Dad about his workout aesthetic.

Sylvester Stallone and family.Stefanie Keenan/Getty

Sylvester Stallone; Sistine Stallone; Scarlet Stallone; Sophia Stallone and Jennifer Flavin Stallone harper x Harper’s BAZAAR May Issue Event Hosted by The Stallone Sisters and Amanda Weiner Alagem at Mama Shelter Hollywood on April 26, 2017 in Los Angeles, California.

Never miss a story — sign up for PEOPLE’s free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

“I’ll be in headbands, I’ll be in a top hat, in cowboy hats, just to break the doldrums,” he tellsThe Wall Street Journal..

“I do things like that just to keep it interesting. It’s really hard to work out alone.”

Stallone admits, though, that his fitness routine these days is a far cry from hisRocky-level workout regimen.

“I’ve gone from lifting regular weights to mostly bands, cables. It’s kind of like physical therapy. So, you’re using the bar, you’re using different motions and keeping those joints moving all the time,” he says.

“I’ve had five back operations, two shoulders, three neck fusions, both knees,” he says, adding, “I’m bionic.”

It’s that sense of humor that Stallone says keeps him going.

“I try to really see life with the eye of the tiger and a real sense of humor,” he says, referencing Survivor’s famous theme song from theRockyfilms.

“You don’t have to beat up on yourself. The world will beat up on you enough. Give yourself a break. It’s not easy, but without humor, this is not a fun place.”

source: people.com