A book by Wired’s Steven Levy, “Facebook: The Inside Story,” has an interesting anecdote about Mark Zuckerberg. The book says members of Facebook’s communications team blow-dried Zuckerberg’s armpits before big speeches. According to Business Insider, Zuckerberg is known to sweat, once visibly doing so in an on-stage interview. A Facebook spokesperson said they doubt the anecdote is true but said the communications team may have done it.