From the introduction: Heroic Spirits are an existence above mortals, the men and women who shaped the oceans, built the mountains, who defined the concept of heroism with the mere fact of their existence. And as more than one legend will tell you, these men and women who are larger than life also have appetites that are larger than life. Case in point, Medb, who’s lust for men was so large that she was said to need seven men a day to satisfy her desires.... Or Fergus. That really tells you something about their stamina, doesn’t it?