hua of papua New guinea and nu (chp 11, 242)
They believe that bodies contain a life giving substance called nu.
females contain lots of nu (grow faster and age slowly, more moist)
males contain a smaller amount (dry, stronger)
giving nu to a man through intercourse is harmful , and the women gains strength.
encouraged to eat foods that contain nu.When they get older nu doesn't harm them as much.
women lose nu when they menstruate, cook, and give babies. Become less and less dangerous to men depending on how many children they have.