The term "fat loss" refers to the process of reducing the amount of fat in one's body. This can be achieved through various methods, including diet and exercise. When an individual consumes fewer calories than they burn, their body will use its stored energy (in the form of fat) as fuel. Additionally, engaging in physical activity that increases heart rate and muscle contractions can help to further reduce fat stores. Fat loss is often pursued for health reasons or to improve appearance, but it should be done in a safe and sustainable manner.