Reasons NOT to be cheerful Happy people die younger than their more reserved peers

A study which followed children from the 1920s to old age showed that people who were rated 'highly cheerful' by teachers at school died younger.

Source:
http://www.dailymail.co.uk/news/article-1388458/Reasons-NOT-cheerful-Happy-people-die-younger-reserved-peers-study-finds.html