"This just means I'm still up at 4am trainin' hard, takin' care of my babies, drivin' my pick up truck and tellin' a few dirty/nerdy jokes... extremely sexily of course," he captioned a shot of his studly cover.
"Remember, sexy isn't something you 'try and be,'" he continued. "Sexy happens naturally when you're comfortable just being yourself. Trust me, I'm an expert at this."
Inside the magazine, he opens up about his family life with longtime girlfriend Lauren Hashian, their baby girl Jasmine and his 15-year-old daughter Simone, who he shares with ex-wife Dany Garcia. That's Johnson and Simone at Monday night's "Moana" premiere in Hollywood, alongside Fifth Harmony singer Dinah Jane Hansen.
"I've made big sweeping changes in my career over the years, which have served me nicely," he tells the mag. "But I feel that the big sweeping changes that happened in my life, in my relationships, of being a dad, of being a partner, and the things that I was and the things that I am, has really lent itself to a confidence."
"We just have this awesome family that is truly non-traditional but so rooted in love," he adds. "That's such a cool thing. I'm very proud of it."
See more from The Rock as he talks to DeGeneres about daughter Jasmine below. People's Sexiest Man Alive issue hits newsstands Friday.