Energy storage

Your body needs fuel for energy, like a car needs petrol to make it work. In your body, we call this fuel glucose.

Liver changes extra glucose to glycogen

Glucose is a special sugar the body uses for energy.

Glycogen is just stored glucose

Sometimes, the body has more glucose than it needs, but instead of getting rid of it all, your liver changes it into a special chemical called glycogen.

Converting glycogen back to glucose

When you need more energy, your liver will convert glycogen back to glucose.