The 47-year-old actor said Alves liked his larger tummy after he gained weight for his role in the thriller movie.
"It was a whole lot of McConaughey. That's cheeseburgers and beer for eight months whenever I wanted them ...
"I learned that the only thing that makes you tired from overindulging is the thought of quitting. I never got tired. I slept great, I had great energy ... My nickname in the household was Captain Fun. My wife (Alves) misses all 217 pounds of me, and the kids do too, because it was pizza night any night," the actor said on "The Ellen DeGeneres Show".