Exercise contributes significantly to the body's respiratory system by improving lung capacity and efficiency. Regular physical activity strengthens respiratory muscles, enabling more effective breathing and gas exchange. This enhancement in lung function allows for greater oxygen uptake during workouts, leading to improved performance. Exercise also promotes better circulation, which aids in distributing oxygen-rich blood throughout the body. Furthermore, engaging in aerobic activities can reduce the risk of respiratory diseases such as asthma and chronic obstructive pulmonary disease (COPD).