Low-impact exercises that can boost cardiovascular endurance include swimming, cycling, and using an elliptical machine. These activities minimize stress on the joints while effectively elevating the heart rate and improving aerobic capacity. Swimming engages multiple muscle groups, providing a full-body workout that enhances endurance without impact. Cycling, whether stationary or outdoor, allows for controlled intensity and is suitable for all fitness levels. Elliptical machines combine the benefits of running with reduced impact on the knees, making them ideal for individuals with joint concerns. Overall, these exercises support cardiovascular health while ensuring comfort and safety.