For women who like to recreate in Mountain West states like Idaho, it's long been said that you should avoid camping while on your period. The idea was that this would attract wild amimals. But is there truth to this idea? Or is it more myth than fact? In this story, we learn this notion originated from an incident at Glacier National Park over 50 years ago. Maggie Mulles of the Mountain West News Bureau explains how this myth took on a life of its own.