The Journal of the American College of Cardiology reported on the results of a modeling study in August 2022 that concluded, “the association of CRF (cardiorespiratory fitness) and mortality risk across the age spectrum (including septuagenarians and octogenarians), men, women, and all races was inverse, independent, and graded. No increased risk was observed with extreme fitness.”The study – "Cardiorespiratory Fitness and Mortality Risk Across the Spectra of Age, Race, and Sex" – further con...