Ola, bem-vindos. I am Dr Lucas Ferreira, I am a geriatrician in Sao Paulo, and this is The Long Game, where we read the longevity research so you do not have to pay for a course about it. Today's question is one you have seen in a hundred posts. Is VO2 max really the strongest predictor of how long you will live. The claim comes from real studies, big ones, and I am going to walk you through what they actually measured, who was in them, and the one problem with the data that almost nobody mentions. Then the useful part: how fit do you need to be, how much can you improve after 50, and what kind of cardio the evidence prefers. At the end I will give you a verdict. You are listening on Witspeak Podcasts.