Does Cardio After an Overnight Fast Maximize Weight Loss?

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Dr Kiel reviews the research about cardio exercise in the morning after an overnight fast. Does it maximize fat loss?

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From a biochemistry and metabolic standpoint, this is an intuitive concept. When you wake up after having not eaten for 8 or more hours, your circulating insulin levels have dropped and you should be in a so-called fasting state. Theoretically, you are tapping into whatever is left of your overnight glycogen stores and shifting over to free fatty acid metabolism for energy production. This leads to the conclusion that a hard workout or cardio workout in the morning should be an efficient fat burning workout.

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