Sam, I think you and I will need to disagree with regard to this. I am not trying to convince you to fast. The reason I created the thread was to share my fasting experiences. You may of course believe what you wish, and you may dismiss my own empirical evidence (about four years worth of regular fasting) if you wish. And yes, I have had blood work done recently -- both during a fast and not during a fast. I have no medical concerns whatsoever. Of course there was little or no glucose and glycogen stores, but this is one of the main reasons that I fast. And my overall positive results probably have something to do with the amount of fasting and running that I do.