High-intensity interval training (HIIT) significantly boosts caloric burn both during and after workouts. This training involves short bursts of intense exercise followed by recovery periods, which elevates the heart rate and stimulates metabolism. The concept of **excess post-exercise oxygen consumption (EPOC)** indicates that caloric burn continues even after exercise as the body works to return to its resting state. As a result, HIIT is a time-efficient way to burn a high number of calories, improve cardiovascular fitness, and build muscle in shorter workout sessions.