Why do people in Hong Kong live so long? From the latest news (http://www.gulf-times.com/site/topics/article.asp?cu_no=2&item_no=137602&version=1&template_id=45&parent_id=25), people in Hong Kong- both men and women- have longer life expectancy than anywhere else. This is a puzzle: Hong Kong has relatively high levels of stress and pollution, and people live in cramped flats.
One possibility I've heard is that maybe stress is good for you- especially in old age. Consider a quiet retirement in a Western country: it is easy to not be stimulated, day after day. This lack of stimulation may speed the onset of death. In contrast, in Hong Kong all you have to do is look out the window or stand on the street corner, and there is stimulation all day (and in some areas all night as well!) as the world passes by.
What are you views? Why do people in Hong Kong live longer on average than anywhere else? (Here's a related link... http://www.biorap.org/rg/rgagelifestyle.html)