First, heavy TV viewing leads to poor school performance. Most television broadcasters show a variety of programs 24 hours a day, giving the viewers a 24-hour service. More time spent watching these shows is linked with poorer school performance overall and decreased scores on standardized tests. The more time spent in front of a television, the less time spent on homework or had stimulating interactions with adults or other children, "On average, children aged 2-5 watch 14 hours of network television, per week" (Television project). This fact is further supported by a report in CNN news quoting the latest annual Media in the Home survey, conducted by the Annenberg Public Policy Center that "The average child in the United States spends about 25 hours a week in front of the television (including the use of VCR)", and "By grade 12, the average American child will have spent more time watching television than they did sitting in classrooms kindergarten through high school!" (Television Can Be Harmful). In addition, late-night TV watching tires kids out so that they can not pay attention in school. Television also hands kids all the answers, promoting passive learning and short attention spans. As a result, kids have difficulty concentrating and working hard to solve a problem.
Second, heavy TV viewing, heavy kids. There appears to be a strong relationship between time spent in front of the television and being overweigh. "This past March the American Medical Association held a special briefing in New York City to alert parents about the well-proven link between TV viewing and obesity"(CNN news). While