Natural instincts exaggerated by all of the stimulants in our bloodstream.
Man made stimulants.
Milk is man made.
Honey is man made.
Wheat and corn and rice and potatoes are man made.
Apples and oranges and bananas are man made.
Sugar and alcohol and caffeine and nicotine are man made.
Head off into your surroundings taking nothing with you and live there for thirty days and tell me what you eat and drink.
How many drugs you take..