apparently genetic research suggests that aggressive behavior may be due to genetics.
[URL=http://www.msnbc.msn.com/id/17029258/wid/11915773/]Here's the whole article, I don't want to get into legal trouble with a publication.[/URL]

also, another study finds that less television doesn't necessarily mean more exercise (especially for coma victims:p)
[QUOTE=U.S. Researchers][URL=http://www.msnbc.msn.com/id/16989764/wid/11915773/]Simply restricting television viewing may not be effective in increasing physical activity[/URL][/QUOTE]