Harvard Business Review, Blog. Tony Schwartz.
http://blogs.hbr.org/cs/2010/09/why_companies_should_insist_em.html
The author reviews a series of physical and mental advantages to short duration naps. This includes increased energy level, faster reaction times, vastly improved productivity and improved learning ability.
The internet search firm Google, recognizes the importance of having a rested and energetic crew and actually provides napping pods for its employees.
My comments: Alternatives to naps include certain kinds of meditation ("providing a serious "power nap" effect), and music with frequencies scientifically proven to be able to drive the brain into deep restful states, such as products from www.pzizz.com.
