Final answer:
Regular aerobic exercise is associated with a lower heart rate, improved cognitive function, better stress regulation, and enhanced immune response.
Step-by-step explanation:
Research has shown that regular aerobic exercise leads to various health benefits including a lower heart rate, improved cognitive function, and a strengthened immune system. Specifically, by promoting cardiovascular health, exercise increases stroke volume and efficiency of the heart, which directly contributes to a lower resting heart rate. Moreover, persistent aerobic exercise enhances cognitive functions such as attentional control, working memory, and information processing speed. It also has been associated with better stress regulation, potentially preventing stress-related health problems by moderating the body's response to stressors. In addition, physical activity may improve immune function and decrease the risk of upper respiratory tract infections.