ENDURANCE ATHLETES: PROTECTING YOUR HEART Endurance sports—think marathons, triathlons, long-distance cycling—usually go hand in hand with a strong, healthy heart. But every so often, headlines remind us that even elite athletes aren’t immune to serious cardiac events like sudden cardiac arrest. It’s a strange paradox: regular physical activity slashes the risk of heart disease for the average person, yet intense, prolonged endurance training can sometimes reveal hidden heart problems or, in rare cases, trigger dangerous arrhythmias in athletes who appear perfectly healthy (European Heart Journal). Understanding the Hidden Risks For most endurance athletes, the risk of a cardiac event is extremely low. But when it happens, it’s usually linked to undiagnosed congenital or inherited conditions—things like hypertrophic cardiomyopathy, arrhythmogenic right ventricular cardiomyopathy, or rare coronary artery anomalies (Frontiers in Cardiovascular Medicine). In athletes over 35, corona...