Glycogen is present in your muscles, liver, and brain. When your physique needs energy, glycogen gets converted into glucose for quick use by your muscles’ cells. You mainly at all times need glycogen-even if you sleep. Our bodies need a relentless provide of energy to function properly and also you want even more power to operate if you’re consistently burning it in your rides, and an absence of carbohydrates in the food plan can cause fatigue, poor mental perform, and lack of endurance and stamina. During low-depth activities, nonetheless, you burn mostly fat and relatively little glycogen (carbs). As you trip more durable, your body begins to rely extra on glycogen and fewer on fats. However, that is extra like a sliding scale, rather than like flipping a switch. How much glycogen do you might have stored in the body and the way long do those shops final? You sometimes store about 600 grams of glycogen, or about 2,400 calories’ value in case your shops are totally stocked. About 80 % of that is stored in your muscles; the remainder is stashed away in your liver.