You're kidding yourself if you've got afib and want to be active or just not die. I went 2-3 years in my mid 60's on metoprolol and a blood thinner. It was like having a speed limiter on my heart and if I crashed the blood thinner could have killed me. I had cardiac ablation surgery at the best hospital my wife and I could identify in our state (New Mexico), it went great, I recovered quickly and haven't had any issues at all in the last 10 years. At 73 last year I did a couple of extremely difficult gravel events at between 7k and 9k feet and other than wishing I'd prepared better, I had zero issues. I hike and ski at between 5k and 12k feet. My wife has a BS in Pharmacy, an MS in drug information science, a Pharm D, was the top clinical pharmacist in her Pharm D class and was invited to be an associate clinical professor after she graduated. When I had the procedure, she was a clinical pharmacist at the local hospital and had a detailed understanding of the issues associated with the drugs I had been on. Again, if you think that you are "managing" afib you're kidding yourself. Don't take advice from anyone other than a highly qualified cardiologist.