I have always been a fan of the NAP.  Studies have shown for years that taken before 3 PM and kept to no more than 45 min re-energize the mind and improve performance. And here we go again...

To help employees in the office fight through a wave of afternoon fatigue, Nationwide Planning Associates Inc. remodeled an unused closet with a recliner, a fountain and a bamboo rug. In their office, they believe that nap time isn't just for preschoolers.

Employees of the New Jersey investment firm sign up for 20-minute blocks of restorative time twice a week and apparently emerge energized.

Health experts have gone so far as to say worker fatigue is an epidemic that is weighing on workers' health and productivity.  Some 43% of Americans ages 13 to 64 said they rarely or never get a good night's sleep on weeknights, according to a 2011 poll by the National Sleep Foundation.