Plugging your digestive tract is a joke, unless you dont go to the head. They will stop you up, but if you take care of yourself and make sure you do a regular "movement' you will be OK.
MRE's are alot better than what they used to be, I agree, but I think after a while they all taste the same.
Garrett
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On occasion of every accident that befalls you, remember to turn to yourself and inquire what power you have for turning it to use. - Epictetus