Positive polarization by serving the body.

[Phoenix]

A healthy meal we would only eat for a good working 'vehicle' which we probably use, if we are on this site, for service to others.

An unhealthy meal we are going with our preferences, and would probably be doing it as a means to 'escape' from the world.

Although perhaps there are exceptions. A lot of people might function well with fast sugar combined with exercise for example.