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ADVANCE FOR FRIDAY, AUG. 31 - In this July 11, 2012 photo provided by the University of Michigan School of Engineering, Taewon Kim, an electrical engineering systems graduate student, sleeps in the library at the Duderstandt Center on the campus of the University of Michigan, in Ann Arbor, Mich. As college students return to campus in the coming weeks, they�ll be showered in the usual handouts of coupons, condoms, and credit cards. But some schools are also giving students what a growing body of research reveals could make a huge difference in their college careers: ear plugs, sleep shades and napping lessons.

Marcin Szczepanski / Michigan Engineering Communications & Marketing