#7 Indra Nooyi

Chairman and CEO of PepsiCo

Indra Nooyi is one of the most prominent female executives in the world. Since becoming the CEO at PepsiCo in 2007, Nooyi is goal oriented and sleeps four hours per night. Prior to this, Nooyi is no stranger to long work hours as she was working as a receptionist during her Master’s education at Yale and was accustomed to graveyard shifts.

#6 Dominic Orr

President and CEO of Aruba Networks

Dominic Orr was a former executive at HP during the 1990’s and used to work 18 hours a day and continue to attend phone calls an answer e-mails during the few hours of his personal time at home. According to Wall Street Journal, Orr sleeps on an average of 4 hours per night and is accustomed to rising before dawn and working till late evenings.

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