Fluids

Beast Fables - Comic 68 - Pertelote checks in on Rey and finds her unwell.

Medieval Moment: If you haven’t heard of them, humours were used to describe a person’s health and temperament in the Middle Ages and earlier. The idea was that you had four humours that you needed to keep in balance, and that any one being too dominant would cause illness or turn you into a Grade A Jerk. There were a number of treatments that would help balance your humours, the most popular of which is bloodletting. Ultimately this theory was ditched as medicine progressed, but we still hold onto phrases that remind us of this part of our history.

https://www.britannica.com/science/humor-ancient-physiology