This Naked Age

A narrator (Leo Donnelly) guides the viewer through the strange world of the nudist, visiting "health camps" in upstate New York, two in France, and finally one in Germany, "the nudist capital of the world". There's a lot of exercising and nature hikes. The nudity is kept fairly mild. While there's an endless parade of bare behinds, women's breasts are rarely shown, and none of the "naughtiest bits" are visible, with some smudging of the images to hide them.

Like most nudist films (a popular exploitation genre of the 50's and 60's), much is made of the health benefits of nudist living, and how chaste everyone is, and any overt sexuality is noticeably absent. The film's bizarre highlight is when a dozen or so German nudists on a hike in the woods decide to get down on all fours and crawl after each other for a bit. This is pretty silly, but amusing in its naive, winking luridness.