The problem with this idea long-term is that the body will 'plateau' and what may happen is decreased immunity and inability to adapt to natural seasonal and/or

The problem with this idea long-term is that the body will 'plateau' and what may happen is decreased immunity and inability to adapt to natural seasonal and/or drastic weather changes. The body is not so simple as to be relegated to some normalizing diet. Food is as much about energetics than just protein/carbs/calories.