A recent study indicates a decline in cardiac arrest deaths among marathon runners. Contributing factors may include improved CPR training and widespread use of Automated External Defibrillators (AEDs). The growing prevalence of wearable technology that tracks fitness metrics also likely allows for earlier detection of potential heart issues. Additionally, some comments highlight the potential risks associated with excessive endurance training, such as higher incidences of AFIB among athletes. This indicates that while the overall trend is positive, moderation in training is advised, and further research into congenital heart conditions is necessary to prevent sudden cardiac events.