Glycogen is a highly branched chain of repetitive glucose units that are stored in your body. Glucose being your primary source of energy, glycogen is synthesized and degraded depending on your level of exertion.
Glycogen storage is predominately in your liver, and to a lesser extent skeletal muscle tissue. Your liver can readily convert glucose to glycogen or break glycogen down for the maintenance of a normal blood sugar level. And when energy is need quickly by a muscle, stored glycogen can be directly converted by muscle into lactic acid.
The most important source of glycogen is carbohydrates, which can be found in fruits, vegetables, pastas, breads, cereals, rice, etc. Your body converts carbohydrates to glucose during digestion. Glucose is taken up from your bloodstream by the liver and converted to glycogen for storage. Glycogen synthase is the digestive enzyme involved in this conversion.
Whenever your body runs out of glycogen that’s stored, it will turn to fat and protein for energy.
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