Researchers from the University of California, San Diego; the Rady Children's Hospital -- San Diego; the University of California, San Francisco; and the University of South Alabama determined that television viewing is not only linked to childhood obesity, but also to hypertension in children, according to a study published in the December 2007 issue of the American Journal of Preventive Medicine... (source)

So that explains it. And not all the gym excuse notes, the high-sugar/fat diets, or the lack of outdoor fun due to all the pedos wandering the streets like lecherous, 8-bit zombies. Enjoy that Halloween candy, ev'rybody!