Depleting Glycogen storage before fat burning, or not?

[Julian_M]

In exercise and workout for the purpose of losing weight. Isn't it that the glycogen in the liver takes 20 hours to deplete. Must one deplete glycogen storage first before fat burning in cells would be utilized? But I read conflicting reports that even without depleting glycogen storage, fats burning can happened. I need to understand the exact biological mechanism for this where fat burning occurs even when glycogen in liver is still there. Thank you.

 

[berkeman]

In exercise and workout for the purpose of losing weight. Isn't it that the glycogen in the liver takes 20 hours to deplete. Must one deplete glycogen storage first before fat burning in cells would be utilized? But I read conflicting reports that even without depleting glycogen storage, fats burning can happened. I need to understand the exact biological mechanism for this where fat burning occurs even when glycogen in liver is still there. Thank you.

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