Do we really lose most of our heat through are heads? Does eating fast make you gain weight? From Winnipeg to Florida, from New York City to Vancouver, molecular biologist Dr. Jennifer Gardy goes in search of the hard facts behind some popular wisdom. It's a journey through seldom-seen research that forces Dr. Gardy to become a real-life guinea pig to test these claims and discover, once and for all, whether they're science fact or science fiction.