أخذ قيلوله يزيد من فهمك

The study recruited 39 healthy young adults and divided them into two groups. All 39 were asked to learn 100 names and faces at noon, and then to learn a different set of names and faces at 6 p.m. But 20 of the volunteers who slept for 90 minutes between the two learning sessions improved their scores by 10 percent on average after sleeping; the scores of those who didn’t nap actually dropped by 10 percent.

http://www.nytimes.com/2010/02/23/health/research/23beha.html