Loneliness is Cold, Really

Research published in the journal Psychologlical Science shows that feeling loneliness literally feels cold. "Unpopular" participants in studies were more likely to want hot soup or coffee and to report a lower room temperature than other participants involved in the research at the University of Toronto.

Raising the temperature may help someone who is feeling loneliness much like light therapy helps those suffering from seasonal affective disorder (SAD).

Question is: Why is science continually surprised by the correlation between mind and body?