Even the exercise physician that discovered the carbo-loading phenomenon, and wrote a book on it Lore of Running, now thinks he was wrong. He also got Type 2 Diabetes. I have his new book Lore of Nutrition.

Carbs help at high intensity running but you can raise the thresholds at which the body still burns fat

Carbo-loading before long endurance exercises like a marathon or some other multi-hour cardio exercise has been proven to be helpful, not sure about normal exercise lengths of an hour or two, or other types of exercise

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