What Happens When You Break a Fast With Refined Carbs? | Blood Sugar, Insulin & Fat Burning

By How Things Work 001

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What really happens inside your body when your first food after fasting is mostly refined carbohydrates? After an overnight fast, insulin is relatively low, the liver is helping maintain blood glucose, and fat cells are releasing more fatty acids into circulation. Then you break the fast with foods like a bagel, pastry, sweetened cereal, white toast, or a sugary coffee drink. Within a short time, the metabolic environment begins to change. In this video, we go inside the body to follow what happens from the very first bite—through the intestine, bloodstream, pancreas, liver, skeletal muscle, and fat cells. You’ll learn: • What happens to blood sugar when refined carbs are your first food after fasting • Why insulin rises quickly after a high-carb meal • How refined carbohydrates are digested and absorbed • What happens to liver glycogen after the fast ends • Why fat burning decreases after carbohydrate arrives • Why lower fat oxidation does not mean the fast was “wasted” • Why carbs do

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