Interval training involves alternating high-intensity bursts of exercise with lower-intensity recovery periods, unlike traditional steady-state cardio, which maintains a constant effort level. This approach can lead to improved cardiovascular fitness and higher calorie burn in a shorter time. By incorporating varying intensities, interval training can enhance metabolic rate and promote greater fat oxidation. This method is often more engaging and can lead to increased adherence to fitness routines, making it a popular choice for varied workout experiences.