This is the hour from which you first notice you need
to take a shit. If you don't shit within this hour time frame, it is possible that you will not need to shit for quite some time. So take advantage of the shit window and do not miss it, because if you do it can lead to being
constipated and force you to carry this extra shit around with you for an undisclosed time. And who wants to carry around extra shit?
(similar to the
caffeine window (sort of))