Primitive humans, and wild animals, through all of time, did not always have food. Archer-Daniels-Midland and refrigeration were not available to give them constant access to food of all types. When hunting and gathering was successful, when crops were in season... we ate, and the powerful peptide hormone insulin helped us store the excess nutrition for the inevitable times of fasting to come.  During fasting times other powerful hormones such as cortisol and growth hormone, would maintain us in fighting trim, for survival.

This slow breathing rhythm — input of energy, output of energy — governed the flow of life. Fast forward to 21st Century America where the average person eats six times per day.  A never ending series of insulin pulses are secreted into the blood, resulting in an almost continuous physiology of insulin dominance. Our "modern" bodies, prepared for a time of fasting that never comes, are pushed farther and farther out of balance, and are gradually destroyed through a process known as "metabolic syndrome".