Here's a look at an average day for Facebook CEO Mark Zuckerberg:
After waking up at 8 a.m., the Facebook founder immediately checks Facebook, Facebook Messenger, and WhatsApp on his phone, he told Jerry Seinfeld in a Facebook Live Q&A.
Once he's gotten his morning updates, it's time to work out. Zuckerberg typically exercises about three times a week.
Sometimes he brings his dog Beast along. The tech CEO says running with his pet has the "added bonus of being hilarious" because it's "basically like seeing a mop run."
Beast is a Hungarian sheepdog with quite an impressive coat.
Once he's gotten his exercise in, Zuckerberg's not too picky about what he eats for breakfast. He'll usually just dig into whatever he's feeling that day. He doesn't like to waste time on small decisions.
That's also why he wears the same thing almost everyday. Zuckerberg's work uniform consists of jeans, sneakers, and a gray T-shirt. When asked about his wardrobe in 2014, he told the audience: "I really want to clear my life to make it so that I have to make as few decisions as possible about anything except how to best serve this community."
His Palo Alto home is tricked out with a "custom-made artificially intelligent assistant," according to CNBC.
Zuckerberg puts in 50 to 60 hours a week at Facebook, but he thinks about the social media platform constantly. "I spend most of my time thinking about how to connect the world and serve our community better, but a lot of that time isn't in our office or meeting with people or doing what you'd call real work," he told CNN.
Earlier this year, The Verge reported that Zuckerberg has some help managing his own social media channels. A squad of 12 employees helps him eliminate inappropriate comments and post updates on his Facebook page.
When he's not working, Zuckerberg spends some time expanding his mind. He's learning Mandarin Chinese. He also tries to tackle as many books as he can -- in 2015, he challenged himself to read a new book every two weeks.
Zuckerberg's daily schedule tends to vary more on his frequent travels.
He's met all sort of big names, including world leaders like Pope Francis ...
... U.S. President Barack Obama ...
... and celebrities like his personal friend Vin Diesel.
Recently, Zuckerberg embarked on several trips around the U.S., prompting some to speculate that he's interested in a future career in politics.
Whether he's traveling or working, Zuckerberg also spends time with his wife, Dr. Priscilla Chan, and his daughter, Max. He took a two-month parental leave from Facebook after she was born in December 2015. In March 2017, the couple announced that they are expecting another daughter.
Every night before going to bed, the Facebook CEO tucks Max in with a traditional Jewish prayer, the "Mi Shebeirach."