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Priscilla Chan and Mark Zuckerberg sitting next to each other while looking into the distance.
Priscilla Chan, Mark Zuckerberg, and Dana White, the UFC president, at the UFC Fight Night event in Las Vega, on October 1.
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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.
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Mark Zuckerberg, center, poses with two men, including his trainer, Dave Camarillo, left.
Zuckerberg congratulated his trainer, Dave Camarillo on his 5th degree black belt. Zuckerberg, meanwhile, was promoted to blue belt.