Improving cardiovascular endurance effectively involves a combination of aerobic exercises, training intensity, and consistency. Engaging in activities such as running, cycling, swimming, or rowing enhances heart and lung efficiency, gradually increasing stamina. Incorporating interval training can boost intensity and challenge the cardiovascular system, promoting better adaptation over time. Aiming for at least 150 minutes of moderate-intensity or 75 minutes of high-intensity aerobic activity per week is generally recommended. Additionally, varying workouts can prevent plateaus, keeping the body engaged and continually improving endurance.