 The AGA was inspired by the idea that nude sunbathing was a healthy way of life.This belief seems to have first gained popularity in Germany in the 1890s following the publication of two influential books, Heinrich Pudor's "The Cult Of The Nude" and Richard Ungewitter's "Die Nacktheit" (Nakedness), a utopia of nude living.In the early 1920s while in Germany, Dr. Parmelee researched the movement having read reference to it in a book written by Havelock Ellis on sex and society in 1912.