To increase aerobic capacity, individuals should engage in regular cardiovascular exercise. Activities like running, cycling, swimming, or brisk walking can enhance heart and lung function. Incorporating high-intensity interval training (HIIT) can also be effective for improving fitness levels over time. Gradually increasing the duration and intensity of workouts will stimulate the cardiovascular system and promote adaptation. Additionally, ensuring adequate recovery is vital to allow the body to rebuild and improve. Consistent training combined with proper nutrition enhances overall aerobic performance.