I am a 60 year old female who has always been very active, teaching fitness classes and backpacking. I took up mountain biking a few months ago and really pushed my heart (redlining!) and developed AFib or SVT. I had always been proud of my low resting heart rate, now I know that it may have been more of a curse than a blessing. I am scheduled for ablation in 10 days and my EP is concerned about the difficulty in finding the misbehaving areas to ablate. I am actually less worried about the ablation than I am about the very real potential for a need to change my lifestyle. I know that sounds so petty and shallow but I guess much of my identity has been as a very fit person. I am reading more and more about reversible changes in the heart with training and then DEtraining. Sounds like such a simple choice, right? Just decrease the exercise intensity and hope for the best. I am reaching out in this forum because I think there are other "exercise addicted" people out there with similar feelings. I need some mutual hand holding as I make my way through the ablation and how my life is going to change now. Thanks in advance!