It's a very old expression - 'Breakfast like a King, lunch like a Prince and supper like a Pauper.' - indicating that we should reduce our food intake as the day goes on ... therefore we'll be hungry in the morning and ready to Breakfast like a King again.
But our working lives don't allow us to live that way most of the time. We don't have time for the large breakfast before work, so we're running on empty for most of the day and starving by teatime, when we make up for it all before going to bed. Our bodies need rest at night, not to be digesting food, so we then end up with gastric problems.
I think the Breakfast like a King is probably the most natural way to eat but the majority of human beings have forgotten what 'natural' is now, myself included. We live according to the demands of commerce and electric lighting, not natural lighting, we have foods available to us out of season, and we have food available at any time of day or night - so our bodies don't actually respond as they should any more. It's no wonder we're all sick in some way or other. :roll: