Cardio exercise is beneficial for lung health as it improves cardiovascular fitness and enhances lung capacity. Activities such as running, cycling, and swimming increase breathing rate and depth, which helps to strengthen respiratory muscles and improve oxygen exchange in the lungs. Over time, consistent cardio exercise can lead to better overall endurance and efficiency in delivering oxygen to the body, reducing feelings of breathlessness during exertion. This enhanced lung function also lowers the risk of respiratory diseases and improves quality of life, allowing individuals to engage in daily activities with greater ease and stamina.