Full context:   Even though humorism theory had several models that used two, three, and five components, the most famous model consists of the four humors described by Hippocrates and developed further by Galen. The four humors of Hippocratic medicine are black bile (Greek: μέλαινα χολή, melaina chole), yellow bile (Greek: ξανθὴ χολή, xanthe chole), phlegm (Greek: φλέγμα, phlegma), and blood (Greek: αἷμα, haima). Each corresponds to one of the traditional four temperaments. Based on Hippocratic medicine, it was believed that for a body to be healthy, the four humors should be balanced in amount and strength. The proper blending and balance of the four humors was known as eukrasia.