I just listened to episode 87 of Inside Exercise. Glenn interviews Paul Thompson, former chief of cardiology at Hartford Hospital and a professor with expertise in the effects of exercise on the heart and treatment options. Fascinating discussion of how having a larger heart increases the risk of AFIB. They discuss the pluses and minuses of exercising intensely vs moderately and several related topics. If this topic interests you, I recommend a listen. It’s on YouTube and other streaming platforms.
Otto