It is definitely NOT all you need to stay nourished long term, but in the short term during a fast your body will rely on it's fat stores for energy which allows your digestive system to take a break (your liver does most of the heavy lifting at this point, converting fat into ketones as I understand it). You should supplement things that your body cannot keep readily available as much as your stomach can tolerate - I use the "Paleo-Aid" as a mechanism for keeping myself hydrated and my electrolytes in check. Sometimes I will add the contents of a multivitamin capsule into the Paleo-Aid to help make sure I am getting essential vitamins and minerals. Be careful with taking actual capsules as they can be hard on your stomach (painful pressure IME) during a true fast (no calories consumed).
Generally speaking, I made the Paleo-Aid with:
Some form of green/herbal tea
real Celctic salts for electrolytes/trace minerals (should be many different colors, I would avoid table salt, I use Redmond RealSalt)
Fresh squeezed lemon/lime juice if I was feeling particularly tired/groggy for a mini-dose of sugar and additional electrolyte help
Cleanest water you can get your hands on
I usually drink some of this whenever I'm feeling a bit lower than I would consider normal during a fast. I consider it normal to be a little tired, light headed and sluggish during an extended fast. It can also help with hunger pangs.
Good luck - 40 hours is impressive and about the longest I've gone myself so far!
Last edited by jadedgamerx; 03-22-2013 at 08:38 AM.
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