Cardiovascular exercise improves lung capacity by promoting better oxygen utilization and increasing respiratory efficiency. Aerobic activities, such as running or swimming, require increased oxygen uptake, which strengthens the muscles involved in breathing. Over time, this training leads to an increase in both lung volume and respiratory rate, allowing for more effective gas exchange. Enhanced lung capacity not only contributes to improved athletic performance but also benefits everyday activities by promoting better stamina and endurance. Regular cardiovascular exercise fosters long-term respiratory health and efficiency.