The most common type of exercise for improving cardiovascular fitness is aerobic exercise, which includes activities like running, cycling, and swimming. Aerobic workouts have a consistent, rhythmic nature that increases heart rate and promotes better oxygen utilization in the body. Regular participation in aerobic exercises strengthens the heart, enhances lung capacity, and improves overall endurance. Engaging in at least 150 minutes of moderate-intensity aerobic activity weekly can lead to significant health benefits, including reduced risks of chronic diseases.