I believe my afib may be related to pressure on the vagus nerve, at least some of the time. I have learned to avoid eating too much, not eat after 5pm, and not recline after eating. I have spinal fractures that make my insides a little crowded! I also try breathing exercises and getting up and moving around.

I have been reading about "polyvagal theory" (Porges has many books available) and purchased "Polyvagal Theory Made Simple" by Caulfield, a handy little book with breathing and self-massage techniques. I am investigating this for various sensitivities and neuropathies but it may help with heart as well.