By Tanner Garrity According to a new study from the University of Cambridge, watching more than one episode of television a night could have a devastating impact on your heart. Researchers concluded that 11% of coronary heart diseases could be prevented if people kept their TV consumption to less than one hour a day. The study — which was published in BMC Medicine — assessed data from the United Kingdom’s sprawling Biobank and adjusted for genetic predispositions to coronary heart disease. TV-watchers at the very top, who regularly consumed four hours or more a day, were most at risk of develo…