This is the term for glucose in storage
form. Glucose is a high powered fuel source for the body.
Free fatty acids are a body's standard fuel, while glycogen is its high
powered fuel. When the intensity of an exercise or race gets so
great that fat can no longer meet the needs of the body, it taps into
its glycogen reserves for the extra boost. The glycogen that is
stored in the liver helps to keep blood glucose levels
normal. The glycogen reserves stored in the muscles are
utilized directly by those very muscles only when those muscles are
doing intense activity.
It is important to know how to maximize your storage of glucose and how to train your body to effectively use it and replenish it.