Yes, what squabbles?  I had entirely forgotten them by the second sip.  I've googled asymptomatic A-fib.   It reminded me of the time when the underlying reality of my marriage came bubbling to the surface - I went to see a friend and told her while we had our normal activities of scrabble and beach walk and then as I was getting ready to go back home I oh I thought I was having a heart attack.  My friend was looking at me and said she thought I might be having a panic attack.  I had never had a panic attack but took half the tablet she was handing me and lo and behold I did stop having the pains.  The next day I went to see the doctor and told him about my marriage as he took my blood pressure.  So he arranged some counselling for me and told me my blood pressure was too high but he was not medicating, just arranged to have a check up again in a couple of weeks and by then it was ok.  That's about 12 years ago now.  It still surprises me how physically my heart was affected.