In 1978, I had recently returned from Mexico, where I Had been living with an extended family of Huichol Indians. The power spots and sacred sites I visited with the Huichol shamans corresponded with geographic locations that were noteworthy for fresh air and bright states of consciousness.
I telephoned Dr Krueger, who taught and worked at UCB, and spoke with him about the extraordinary qualities of air found in locations such as near waterfalls, the beach and high elevation deserts and mountains. He said that the common characteristic of all the different locations was the abundance of small air negative ions. He confirmed that many people do experience an enhanced awareness, easier breathing and a general sense of well being when breathing air rich in NAI (negative air ions).