A person can improve their cardiovascular fitness through consistent participation in aerobic exercises, such as running, cycling, swimming, or brisk walking. Gradually increasing the intensity and duration of workouts helps build stamina and endurance. Incorporating interval training, which alternates between high and low-intensity efforts, can be particularly effective. Additionally, setting realistic fitness goals and maintaining a regular exercise schedule contribute to sustained improvements. Complementing workouts with a balanced diet and adequate hydration further enhances cardiovascular health, ultimately supporting overall fitness improvements.