Hiking equipment
According to Tom Brown, the basic plan for survival is in the order of shelter (including clothing), water, fire, and food. Cody Lundin writes about the "Rule of 3s"; this relates to human survival without basics: three minutes without air, three hours without shelter, three days without water, or three weeks without food.
Hilton Hotema
In "Man's Higher Consciousness", Hotema wrote that man was designed to live 80,000 to 100,000 years, before his teeth and alimentary canal were subject to degeneration. It was published in 1952 as "Man's Miraculous Unused Power" using the pen name Kenyon Klamonti. George R. Clements (AKA Hilton Hotema, AKA Kenyon Klamonti) claimed he became a vegan at 9 years of age after reading a book about health at school. He said he lived as a breatharian-fruitarian for almost 80 years. He lived to 92 years of age." Hotema is documented in the book "The Struggle Between Religion & Science" by Marshall J. Gauvin.