Then introvert how?!

Hmm, my psych notes say that research shows:

If smoking = k * death rate,

then no. of social ties = k * (1 / death rate)

where k is the same value.

Hey! What happen to introverts? Xiao liao. But they also say having pets reduce chance of dying during heart attack. Woof! Whee, psych is damn fun to study, can mug this kind of info instead of bloody bacteria names.