#5 Sergio Marchionne

CEO of Fiat and Chrysler

Marchionne is one of the most renowned executives in the automotive world. And according to a 60 Minutes profile on the resurrection of Chrysler, Marchionne wakes up daily at 3:30 in the morning and deals with the European market. With four hours of sleep per night, fueled by coffee and cigarettes, Marchionne invented the eight day by travelling to and fro America and Italy during holiday seasons.

#4 Martha Stewart

Founder of Martha Stewart Omnimedia

Martha Stewart’s company runs four Magazines, a TV show, a Radio Show and also has product lines in stores like Staples and Michaels. With so much on her plate, Martha carries out a tight schedule and sleeps less than four hours a night.

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