Dr James O’Keefe has presented new information regarding your longevity AND fitness. His most recent TEDx presentation in Manchester, England (https://saintlukeskc.org/about/news/tedxrncm-talk-go-outside-and-play-your-friends) goes hand-in-hand with his current paper published in Mayo Clinic Proceedings.
Further information can be found at:
Mayo Clinic Proceedings: https://youtu.be/GxUtU-6MZrE and https://www.mayoclinicproceedings.org/article/S0025-6196(18)30538-X/fulltext
New York Times: https://saintlukeskc.org/about/news/new-york-times-best-sport-longer-life-try-tennis