His early days were far from sexy, Elba said, growing up "tall and skinny" at an all-boys school in London, where he played football, basketball, cricket, hockey and rugby.
"And my name was Idrissa Akuna Elba, OK?" he said.
Elba, who recently directed the film "Yardie", also told the magazine that as a kid he "got picked on a little bit", but when he got older and grew a mustache he was the "coolest kid on the block".
He also took the opportunity to encourage his followers to vote in the upcoming United States midterm elections. "Your vote can make a difference!"
The 46-year-old "Avengers: Infinity War" star frequently uses Twitter and is a popular topic of discussion on the social media site with more than 1.4 million Tweets about him this year. "Grew a mustache, had some muscles, bonkers." he told People magazine.
What do you think of Idris Elba being named Sexiest Man Alive by People?