Thanks for this information. I will get the book before my next visit to my cardiologist.
I had asked him about him about it a year ago and told that it was not for me maybe because I have had Afib for 15 years. I don't know if it is related but I seem to be very sensitive to cold weather. It may be because my metabolic rate is slowing with age but I wonder if my Afib and a less efficient heart may have something to do with it. Stopped taking Metoprolol as this slowed my heart rate too much, but still on Diltiazem, Digoxin and Xarelto.