Limit screen time (television, movies, videos and computer games) to
less than 2 hours a day! Kid's aren't only watching WAY too much TV, think about all of the other "screen time" activities their engaged in everyday: video games, ipods, cell phones, ipads, hand held games, computers, etc...
Children ages 8 -18 spend an average of 4 ½ hours per day watching television, 1½ hours using computers, and more than an hour playing video games.
More scary facts? Check out my reference:
Rideout, V. J., Foehr, U. G., Roberts, D. F. (2010). Generation M2: Media in the Lives of 8- to 18-Year-Olds. Kaiser Family Foundation