Interval training is a workout method that alternates between short bursts of intense activity and periods of rest or lower-intensity exercise. This approach can improve cardiovascular fitness, increase endurance, and burn more calories in a shorter amount of time compared to steady-state workouts. Typically, an interval training session might involve sprinting for 30 seconds followed by walking for 1 minute. This cycle is repeated several times. Interval training can be applied to various activities, including running, cycling, and swimming, making it a versatile option for different fitness levels and goals.