Glycogen

Glycogen is a stored form of glucose found in the liver and muscles, serving as a key energy source during exercise. It is crucial for endurance, as it provides readily available energy for prolonged activities. Runners "carb-load" to maximize glycogen stores before races. Depleted glycogen leads to fatigue, known as "hitting the wall." Consuming carbohydrates during long runs helps maintain glycogen levels. Proper glycogen management enhances performance and recovery, making it vital for runners to optimize their diet and training strategies.