"If anyone knows about regularity, it's monks."  That's a quote from Phil Fox Rose (at Busted Halo), and I detected a double-entendre that he probably didn't intend.  Rose recently went on a monastic retreat, and among his epiphanies from that experience, he was struck by the value of having set daily meal times and limited menu choices.  (At his retreat, breakfast each morning was 1 hard-boiled egg, 2 slices of toast with orange marmalade.  Take it or leave it.)