Josh Freed: How long will I live? Let's do the math

I got great news last month when I learned I would live nine years longer than most people, because I play tennis.
A recent Danish study found people who play racket sports live six years longer than cyclists (or joggers) and nine years more than non-exercisers.
Whew! That extra nine years should make up for the fact a recent U.S. study shows I will live four years less than non-drinkers, because I have a couple of glasses of wine most nights.
I will lose an additional four years because I don&r