Fat burning, or lipolysis, is the metabolic process in which the body breaks down stored fat (triglycerides) into free fatty acids and glycerol, which are then used as energy. This process is primarily stimulated by hormones such as epinephrine, norepinephrine, and glucagon, especially during physical activity or calorie restriction.

When you exercise—especially through aerobic training or high-intensity interval training (HIIT)—your body increases energy demand, which promotes the mobilization and oxidation of fat cells. Over time, consistent exercise, combined with a caloric deficit and proper nutrition, can lead to significant reductions in body fat.

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