>My uncle was a professional national level runner Running long distances regularly isn't healthy: https://www.youtube.com/watch?v=Y6U728AZnV0 https://www.you

>My uncle was a professional national level runner Running long distances regularly isn't healthy: https://www.youtube.com/watch?v=Y6U728AZnV0 https://www.youtube.com/watch?v=Y6U728AZnV0 Multiple studies have found a U-shaped curve of CAC scores as a function of regular running distance/intensity: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6543495/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6543495/ Conclusion A significantly higher rate of coronary artery calcification existed in long-term marathon, ultramarathon, and extreme runners than in submarathon runners. Marathoners and ultramarathoners also had a higher incidence of calcification, as well as higher average plaque burden, as compared to a standard database. Marathoners and ultramarathoners also had above-average coronary calcium scores as compared to a national database. Other forms of endurance exercise (swimming, cycling) have similar effects if taken to excess . Sprinting short distances is great, and walking seems to have no upperbound on how much you can safely do of it (the Hadza do it all day and have childlike levels of LDL and minimal CAC).