Summary
While the long-term effects of poor sleep on overall health have been widely researched, this is the first study to provide evidence that in the short term, sleep deprivation does in fact show up as a discernible change in facial appearance.
So, get some sleep and go from rough to ravishing!
Read more :
http://www.huffingtonpost.com/2010/12/15/beauty-sleep-is-no-myth-s_n_797242.html
Some books: