Regular cardiovascular exercise positively affects lung capacity by enhancing the efficiency of the respiratory system. It improves the ability of the lungs to exchange gases, leading to more effective oxygen uptake and carbon dioxide expulsion. This increased efficiency can benefit overall endurance levels and improve performance during physical activities. Over time, cardiovascular exercise strengthens the diaphragm and respiratory muscles, promoting stronger breaths and better stamina. Improved lung capacity also aids in managing respiratory diseases and contributes to overall cardiovascular health, ensuring the body can perform daily tasks with ease.