Carb loading is not an excuse to eat whatever you want in the days leading up to an event. Carb loading is a strategic method of consuming specific foods to help load muscle and liver glycogen stores. Over the past 50 years, a significant amount of research has shown the important role of glycogen for delaying fatigue in athletes competing in endurance and ultra endurance events. Glycogen is the storage form of carbohydrates. Glycogen is primarily stored primarily in the cells of the liver (~100g) and skeletal muscle (~500g). Skeletal muscles transform chemical energy to mechanical work. Glycogen is the body's predominant source of energy during moderate to high intensity activity. The depletion of muscle glycogen during endurance activity causes early fatigue. Carb loading should not be confused with calorie loading. Effective glycogen loading should be the result of emphasizing more energy-dense, carbohydrate sources and reducing fiber, protein and fat. As you can see from the a...
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