High-intensity training (HIT) can significantly improve cardiovascular health in a shorter time frame by maximizing efficiency in workouts. This training elevates the heart rate, leading to improved cardiovascular function and increased VO2 max, which represents the maximum amount of oxygen used during exercise. Short bursts of high-intensity exercise followed by recovery periods yield benefits similar to longer-duration workouts. This method also enhances metabolic rate, allowing for greater calorie burn during and after exercise. As a result, individuals may experience better heart health and endurance.