Netflix is giving a glimpse of the new documentary Sly.
Sly explores the life and career of Stallone, 76, an actor and director known for the Rocky, Rambo and Expendables franchises.
"For nearly 50 years Sylvester Stallone has entertained millions with iconic characters and blockbuster franchises, from Rocky to Rambo to The Expendables," an official synopsis reads.
The film "offers an intimate look at the Oscar-nominated actor-writer-director-producer, paralleling his inspirational underdog-story with the indelible characters he has brought to life."
The Sly teaser opens with Stallone declaring, "Hell yeah, I have regrets!"The actor then likens his life to seeing scenery from a train window whipping by.
"Filmmaking, it comes at a great price. There's no time for anything else," he says.
Stallone has also given a glimpse into his personal life in the Paramount+ reality series The Family Stallone, featuring the actor, his wife Jennifer Flavin and their daughters. The show was renewed for Season 2 in May.
Netflix released Arnold, a documentary about another action star, Arnold Schwarzenegger, earlier this month.