In his book, “Circadian Code: Lose Weight, Supercharge Your Energy and Sleep Well Every Night,” Satchidananda Panda, Ph.D. cites research showing that about 90% of people eat across a span of 12 hours, and many across even longer timespans. When you eat throughout the day, your body adapts to burning sugar as its primary fuel, which down-regulates enzymes that utilize and burn your stored fat. Unfortunately, this is a surefire way into metabolic disaster, radically increasing your risk for obesity and chronic degenerative disease.  The intermittent and partial fasting regimen described in KetoFast essentially mimics ancestral eating patterns, allowing your body to work optimally by allowing for periods of breakdown and cleanout, and periods of rebuilding and rejuvenation. One way that your body promotes this is through autophagy, which is the body's innate cleanout process, in which damaged mitochondria, proteins and cellular components are digested and then recycled during the regeneration phase, which occurs during refeeding. Dr. Panda published a new book titled: The Circadian Code: Lose Weight, Supercharge Your Energy, and Transform Your Health from Morning to Midnight.