This project taught me a lot about how the heart works and how exercise affects long-term health. I learned how to read scientific research more carefully and connect what I learned to real habits people can use. I now understand how important aerobic exercise is for preventing disease and why VO₂ max is such a strong measure of longevity. This project even changed the way I train by helping me see the purpose of Zone 2 workouts, heart-rate tracking, and improving overall cardiovascular efficiency. Most importantly, it showed me how science can help entire communities make healthier choices. I plan to keep studying how exercise and medicine work together as I move forward.