Teenagers with TVs in their bedrooms become slobbier, according to a survey of 780 17-year-olds in US schools. The study published in Pediatrics found teens with a set in their rooms watched more TV than those who didn’t, ate fewer vegetables, drank more sugary drinks, spent less time exercising and achieved worse grades at school. Periodically, our kids have wanted to have TVs in their rooms but my wife and I have always said no. Of course they would ask why. Now we have an answer other than because we said so.