I am a fit 65 year old male who cycles about 100 miles a week but I get periods of AF about every 6 weeks that can last up to 48 hours. This has been occuring for the last 5 years. With AF I can still function reasonably well and even cycle at a reasonable pace. I gave up all alcohol a year ago and this has helped. Any ideas on things I can can do to stop the periods of AF once they start? The one thing that seems to work most of the time is to get on my bike and push it a bit going uphill. After about 20 mins or a good hill and my heart normally kicks in. It is as if my heart gets lazy and will kick in when I really ask it to pump properly. Any other thoughts on actions to cutail periods of AF?