If you're doing ZC William, I'm curious to learn what you daily caloric
demand amounts to and in relation to what specific physical demands. If
you're not an arm chair paleo (akin to a Monday morning water cooler quarter
back), in the 2400 calorie or greater range in relation to a well trained
body, it's hard to imagine sustaining ZC for long periods of time without
adverse effect. Of course, bio-markers would establish actual condition with
greater certainty than subjective reporting.