Chris , hello there !
I will paste some info from MIghty's post just over a day ago "...I am sure he would add much more today responding to you
"...Another encouraging point on my heart is that throughout the fast my wake up heart rate has pretty consistently been 66-68. After 31 days of 66-68s, yesterday morning it was 63 and this morning it was 60. It's too early to tell and it could be that i have just been sleeping more peacefully the past couple of days as i have had a lot of 60-63s throughout the fast later in the day, but if this wake up heart rate continues to drop into the low 50s i will be fantastically optimistic that my heart is returning to normalcy"