Discover magazine lists 20 things that you didn’t know about sleep or things that related to sleep. It is a huge tips, but some of items there are pretty shocking:

4 Mattresses have an average life span of 8 to 10 years. They grow some nasty stuff in that time; one study links mattress bacteria to sudden infant death syndrome.
5 An adult bedbug can survive up to one year without feeding.

12 Thanks in part to their afternoon naps, Spaniards sleep an average of 40 minutes less per night than other Europeans. Spain also has the highest rate of workplace accidents in the EU and the third lowest productivity rate.

Can the stat in #12 implies taking nap will decrease productivity and concentration throughout the day?

20 Things You Didn’t Know About… Sleep – [Discover]

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