The exercise most noted for improving cardiovascular health is aerobic exercise, which includes activities like running, swimming, and cycling. These forms of exercise elevate the heart rate and enhance the efficiency of the cardiovascular system by promoting better blood flow and oxygen delivery throughout the body. Aerobic activities strengthen the heart muscle, lower blood pressure, and improve cholesterol levels, ultimately reducing the risk of heart disease. Engaging in regular aerobic exercise is critical for maintaining overall heart health and supporting a healthy lifestyle.