Looking to extend your life (and improve quality of life) by 3 or 4 years?A new study says sitting 3 or more hours a day cuts your life by 2 years.  Watching TV makes things even worse: If you watch for two hours a day, your life-expectancy drops by another 1.4 years."Sitting is a risk factor, not a disease," says study author Dr. Peter Katzmarzyk, associate executive director for population science at Pennington Biomedical Research Center at Louisiana State University System in Baton … [Read more...]