Mark Zuckerberg shows off ripped physique after training with Israel Adesanya, Alexander Volkanovski

Mark Zuckerberg has called in the cage-fighting experts.

Days after Elon Musk and Georges St-Pierre joined forces for a training session, Zuckerberg has received help from a pair of UFC champions.

In a series of photos posted Tuesday by UFC middleweight champion Israel Adesanya, Zuckerberg appears to have gotten in a training session with him and UFC featherweight champion Alexander Volkanovski, who just three days removed from a title defense at UFC 290.

The series of photos show the three men wearing training shorts and standing on mats; Zuckerberg with his wrists taped.

“No fugazi with Mark,” Adesanya wrote. “This is serious business.”

On Instagram, Zuckerberg commented, “It was an honor to train with you guys!”

Additional Instagram stories by Adesanya show Zuckerberg wakeboarding while a boat pulls him through the water.

It is unclear where exactly the get-together occurred. Zuckerberg and Volkanovski have previously worked together for a Metaverse virtual reality project.

Over the past year, Zuckerberg has continued to increasingly align himself amongst those in the MMA community. In addition to following almost exclusively MMA accounts on social media, Zuckerberg attended an event with his wife, Priscilla Chan, at the UFC Apex in October. The Facebook founder has also competed in Brazilian jiu-jitsu competitions.

In recent weeks, an online feud between Zuckerberg and Tesla founder Musk resulted in both billionaires indicating they’d like to face each other in an MMA bout. UFC president Dana White has repeatedly said he spoke to both men and that they are serious about a fight. The UFC has even printed “Musk vs. Zuckerberg” apparel, which is being sold on their online store.

It’s unclear where or how a fight between the two would actually take place, but White continues to hint it’s quite possible.

“Whoever says no, every other state and country will say yes,” White said. “It’s a billion dollars in revenue, this fight.”

Story originally appeared on MMA Junkie