I am interested in ruling a couple of things out. At any point during the fast were coffee enemas taken? ... and how about intense cardio exercise? I believe either of these could make your heart rate high throughout the day and when you are trying to sleep... with the coffee enema, especially if it went too high. I did one of these on my day 2 before talking to chrisb1 (and acidentally took more than half of the two portions in the first portion so it went higher than it should have... and had a racing heart for about 48 hours to follow that was about 80 resting instead of the 50 or so that it should have been.