Mark Zuckerberg, center, poses with two men, including his trainer, Dave Camarillo, left.
Mark Zuckerberg is eating 4,000 calories per day to maintain his new fitness regime.
  • Mark Zuckerberg says he's eating 4,000 calories per day, 1.6 times more than the recommended intake.
  • Apparently this includes McDonald's staples like the Quarter Pounder, fries, and McFlurry.
  • Mark Zuckerberg does multiple jiu-jitsu and MMA sessions per week, requiring the hefty intake.

Mark Zuckerberg's a hungry boy. 

In a Threads post on Monday, the billionaire chief executive of Meta said that he needs roughly 4,000 calories per day to "offset all the activity" he's doing as part of his new fitness regime.