Everyone likes to nap on the occasion. There are different types of naps, and each has it own benefits. Even people like Einstein and Brahms took naps to help them clear their minds. Naps should be short and just have one full sleep cycle to wake up thinking more clearly. At night however, sleeping in total darkness helps you fall asleep quicker and stay asleep better. The Bulletin Board by the drinking fountain has some more information about napping.