Mark Zuckerberg showed off an impressive physique on Tuesday while training with two UFC champions, amid rumours that the Meta CEO will fight Twitter boss Elon Musk. Zuckerberg, 39, and Musk, 52, went back and forth on social media recently, agreeing to fight one another in a cage, with UFC president Dana White and boxing promoter Eddie Hearn among those to express an interest in making the contest. They are not the only personalities from the world of fighting who are keen to get involved, however. UFC middleweight champion Israel Adesanya and featherweight champion Alexander Volkanovski were pictured with Zuckerberg at a fight gym on Tuesday (11 July), three days after Volkanovski retained his title in Las Vegas. Nigerian-New Zealander Adesanya was present at the T-Mobile Arena on Saturday (8 July) to watch his Australian teammate retain the featherweight belt, as Volkanovski beat Yair Rodriguez in the UFC 290 main event. “No fugazi [fake] with Mark,” Adesanya wrote in the caption to the photo with Zuckerberg and Volkanovski. “This is serious business!!” Zuckerberg commented: “It’s an honor to train with you guys!” Zuckerberg is a keen fan of mixed martial arts and has sparred with Volkanovski before, and the American recently won multiple medals at a jiu-jitsu competition. Meanwhile, Musk – who runs Twitter as well as Tesla and SpaceX – has some experience in jiu-jitsu. Former UFC champion Georges St-Pierre recently offered to train Musk for a potential fight with Zuckerberg, rumours of which have coincided with the launch of Threads, a new Meta app that is designed to rival Twitter. Read More Tyson Fury to box ex-UFC champion Francis Ngannou in seismic crossover fight New UFC champion Alexandre Pantoja worked as Uber Eats driver just two years ago UFC’s Josiah Harrell reacts as pre-fight test reveals brain disease