The answer right after this break…
http://www.telegraph.co.uk/health/healthnews/8702101/Every-hour-of-TV-watching-shortens-life-by-22-minutes.html
Anyone who spends six hours a day in front of the box is at risk of dying five years sooner than those who enjoy more active pastimes, it is claimed.Researchers say that watching too much TV is as dangerous as smoking or being overweight, and that the “ubiquitous sedentary behaviour” should be seen as a “public health problem”.
Experts from the University of Queensland, Australia, write: “TV viewing time may have adverse health consequences that rival those of lack of physical activity, obesity and smoking; every single hour of TV viewed may shorten life by as much as 22 minutes.”
Seems a lot. Didn’t they used to say each cigarette took 5 minutes off your life? An hours tv = 4 cigarettes?
And there’s that old correlation vs causation thing too.