Global myth cycles are rife with blood-drinkers and blood bathers. Often, the tale centers around the notion of young blood as a fountain of youth. The aging countess or decrepit monster needs only to drink from young veins in order to restore a failing body. Yet science has a way of catching up with myth, and in this episode of Stuff to Blow Your Mind, Robert and Joe explore the history of medicinal blood drinking and the startling scientific reality of rejuvenation through transfusions of young blood.