- Glycogen is a starch based energy source created in the body from glucose which is created from carbohydrates consumed that are not used immediately for energy. Glycogen is mostly produce by and stored in the liver. When the body needs energy and there is no glucose from food available the stored Glycogen gets released. Glycogen is also stored in muscle cells and during short periods of strenuous activity, such as weight lifting, the energy is release... br br See the full article WHAT IS GLYCOGEN - br this video can be found at: br br br what is glycogen, glycogen, glucose, carbohydrates, whatispedia, whatispedia.