When a person consumes less food than is required to meet their body's needs, their body enters a state called "fasting". During fasting, the body's glycogen stores are depleted, and the body begins to break down stored fat and protein for energy.

Here's a breakdown of what happens:

* Glycogen depletion: The body first uses up its stored glycogen, which is a form of glucose stored in the liver and muscles. This is a relatively quick process.

* Fat breakdown: When glycogen stores are depleted, the body starts to break down stored fat into fatty acids and glycerol. These can be used for energy, but they also lead to the production of ketone bodies.

* Protein breakdown: If the fasting period continues, the body will also start to break down protein into amino acids. These can be used for energy, but this process can also lead to muscle loss.

So, to answer your question directly, glycogen is not converted into anything else during fasting. It's depleted and then the body relies on other energy sources.