Regular aerobic exercise promotes several adaptations in the heart, such as increased stroke volume, improved oxygen delivery, and enhanced capillary density. The heart becomes more efficient at pumping blood, leading to a lower resting heart rate and improved cardiovascular endurance. This exercise also strengthens the cardiac muscle, supports better blood circulation, and helps manage blood pressure. Additionally, aerobic training can increase overall cardiorespiratory fitness, reducing the risk of developing heart-related diseases and improving overall health and wellbeing.