In the four years between studio albums, he gained 35 pounds as a result of his latest passion: mixed martial arts.
"I've been hit in the body by Chuck [Liddell] many times, Randy [Couture], Kyle Long—the biggest and baddest dudes in the planet," Unbreakable Performance founder and Fox NFL Insider Jay Glazer told TMZ Sports in May.
A week later, Khalifa told TMZ Sports he could go pro if he wanted to, but "I like rapping better."
B/R caught up with him before his Dazed & Blazed summer tour with Rae Sremmurd to see how he got into mixed martial arts and what he plans to do with this hobby.
B/R: You've also got your Dazed & Blazed tour with Rae Sremmurd this summer.