Is Aerobic Exercise good for longevity?

Yes — the evidence for this is strong. Research on aerobic exercise consistently links regular cardiovascular training to improved heart health, better blood pressure control, and gains in cardiorespiratory fitness, with supporting evidence from randomized trials in hypertensive and older populations as well as broader reviews on obesity and heart-failure management. That's reflected in an evidence score of 82/100 for its role in longevity, drawn from 5 studies (2 RCTs), with an estimated impact on longevity rated substantial (85/100).