One significant benefit of high-intensity interval training (HIIT) is its effectiveness in burning calories in a relatively short duration. HIIT workouts can elevate the heart rate significantly, leading to increased post-exercise oxygen consumption and calorie burn even after the workout has concluded, a phenomenon known as the afterburn effect. This makes HIIT an efficient choice for those looking to improve cardiovascular fitness, build strength, and achieve weight loss goals in less time compared to traditional steady-state cardio.