Interval running enhances cardiovascular endurance by alternating between high-intensity sprints and moderate recovery periods. This method pushes the heart to work harder, improving its efficiency and increasing the body’s ability to consume oxygen. Over time, interval training boosts aerobic capacity and stamina, making it easier to sustain prolonged physical activity. Moreover, the intensity of interval running can lead to quicker improvements in fitness levels compared to steady-state cardio, allowing athletes to achieve their goals faster while also burning more calories in a shorter time.