High-intensity interval training (HIIT) focuses on short bursts of intense exercise followed by periods of rest or low-intensity activity. This method maximizes calorie burn and improves cardiovascular fitness in a shorter workout duration compared to steady-state exercise. HIIT can enhance metabolic rate even after the workout has concluded due to the afterburn effect, which increases calorie expenditure. The time-efficient nature of HIIT makes it a popular choice for individuals seeking effective workouts within a limited timeframe.