How Mark Zuckerberg spends his day?

1 Mark Zuckerberg works 10-12 hours a day

When asked about the number of hours he spends working, Zuckerberg said that he works 50-60 hours a week, which is 10-12 working hours per day (See also how Mark Zuckerberg came up with the idea of Facebook).

2 Spends 1 hour/day learning Chinese

Mark Zuckerberg announced at one point that he spends 1 hour per day learning Chinese. However, it's not clear whether he still spends the same time every day doing that.

3 Mark reads a book every other week

Mark Zuckerberg said that he reads a book every other week. This could mean that every other week, Mark spends about an hour per day reading a book (See how to read a book really fast).

4 Mark goes to the office 5 days/week

According to a designer who works near Mark Zuckerberg, the latter comes to the office 5 days a week. This doesn't mean that Mark doesn't work on weekends, but just means that he takes two days off from the office (See also How Mark Zuckerberg spends his money).

5 Mark thinks about Facebook 24/7

Mark said that although he spends 50-60 hours in the office each week, he still thinks about the mission, referring to Facebook's mission, 24/7 (See also Why Facebook Succeeded).

6 Mark checks Facebook all day long

Although he doesn't post all the time, Mark said he checks Facebook all day long.

7 Mark spends a significant amount of time reading about successful people

According to sources in Facebook's office, Mark can spend 70-80% of his time reading about successful people online.

8 Mark Zuckerberg travels very often

According to sources in Facebook's office, Mark travels a lot, but he is also present in the office most of the time.

9 Mark works out 3 days a week

Mark Zuckerberg said, as he answered a question online, that he works out 3 days a week and it's usually the first thing he does as soon as he wakes up.