Under Hippocrates ' bodily humors theory , differences in human moods come as a consequence of imbalances in one of the four bodily fluids : blood , yellow bile , black bile , and phlegm .
Galen contributed a substantial amount to the Hippocratic understanding of pathology .
Under Hippocratic ' bodily humors theory , differences in human moods come as a consequence of imbalances in one of the four bodily fluids : blood , yellow bile , black bile , and phlegm .
Galen contributed a substantial amount to the Hippocratic understanding of pathology .