We don’t want to give too much away, but “Once Upon a Time in Hollywood” finds stuntman Cliff Booth (played by Pitt) throwing down in some truly epic fight scenes. What’s more, it was decided that Pitt would tackle these fights himself, thereby eschewing the need for his own stunt double.

Two decades before he squared off against certain martial arts legends in “Once Upon a Time in Hollywood,” Pitt was swinging fists and taking blows in movies like “Fight Club” and “Snatch.” And while both Tyler Durden and Mickey O’Neil seem like the kind of guys who would and could eat whatever they wanted, their care-free attitudes didn’t interrupt the actor’s dedicated diet plan.

If you want to know what 5-6% body fat looks like, start streaming “Fight Club” at your earliest convenience. In the film, you’ll see Tyler Durden rocking the kind of abs that most men aspire to, but precious few achieve.