Ok I have two myths that I would like to see busted. The first one is going to be a hard one to test, but I'm hoping that there is a way.
The myth is that fat/obesity kills. You hear it all the time but there is so much evidence to the contrary (see the book "Health at Every Size" by Linda Bacon for a couple hundred examples.) I don't want to get into a heated discussion or anything here, just put it to the test. If it's true it will withstand the tests of science. Maybe they could do stress tests and so forth on thin and chunky rats. Just an idea.

The second myth is one that my brother refuses to disbelieve. The myth is that carbonation has adverse effects on the body. Specifically, he claims that athletes who drink carbonation perform worse than athletes who don't. So I suggest an experiment with Grant, Kari, and Tory in which they test their performances in athletic events such as sprinting, endurance running, etc before and after consuming various beverages (Cola, Caffeine-Free Cola, water, club soda, sports drink, etc.) That way you could determine if the carbonation makes a difference or not. I could see where caffeinated beverages might make a difference but I really don't think that carbonation has much of an effect. So lets put it to the test!