Chief of Instagram Kevin Systrom recently told the Financial Times that his required eight hours of sleep was "terrible for an entrepreneur." Systrom, obviously a smart guy when it comes to business -- Facebook just paid a cool $1 billion for his fledgling photo-sharing app company -- was actually dead wrong in this assumption. In fact, sleep is critically important, not only to the basic function of the brain, but to the type of thinking skills that can make or break an entrepreneur or businessperson.
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