High-Intensity Interval Training (HIIT) is considered the most effective type of exercise for burning fat. HIIT involves short bursts of intense activity followed by brief recovery periods, which increases heart rate and promotes calorie burn during and after exercise. This method enhances metabolic rate, allowing for greater fat oxidation. Studies show that HIIT training can lead to significant reductions in body fat while being time-efficient compared to traditional steady-state cardio workouts.