The autonomic and oxidative systems have the most influence over how foods behave in your body. The majority of people are either oxidative or autonomic dominant, meaning that one of these systems controls how nutrients behave in the body. The autonomic system is the master regulator of metabolism and is concerned with the maintenance and regulation of energy in your body. There are three metabolic types possible for autonomic dominant people: 1. Sympathetic 2. Parasympathetic 3. Balanced