High-intensity exercise can positively affect fat loss by elevating the metabolic rate during and after workouts, a phenomenon known as Excess Post-Exercise Oxygen Consumption (EPOC). This increased calorie burn encourages a higher rate of fat oxidation compared to lower-intensity workouts. Moreover, high-intensity intervals promote the preservation of muscle mass, which is crucial for maintaining a healthy metabolism. However, it's essential to combine this exercise type with a balanced diet to maximize fat loss and ensure nutritional needs are met for overall health.