http://www.medicalnewstoday.com/articles/317563.php
Citando:
"Money worries, stress, and drinking too much coffee - these are just some of the factors that can cause us to have a bad night's sleep. Now, a new study suggests that, for young adults, loneliness can be added to the list.
Researchers from King's College London in the United Kingdom have found that young adults who reported feeling lonely were more likely to experience poor sleep quality, daytime tiredness, and poor concentration than their non-lonely counterparts."
