But how does it actually work?

Your fat cells are not there to annoy you! Quite the opposite: the stored fat is there to give your body energy so that it can function properly. Because without energy, nothing works! In the past, around 10,000 years ago, this was not a problem. The food at that time hardly contained any sugar in the form of carbohydrates. But over time, that is exactly what has changed. Pizza, pasta, potatoes, bread and other grain products are far too common. But your body is still the same as it was before these foods existed. Our metabolism has adapted over time and now draws energy from these carbohydrates and no longer from fat cells. This means that nowadays almost everyone is in what is known as sugar metabolism.