ELI5: Explain Like I'm 5

Humorism

Humorism is an old way to explain how the body works. It believes that the human body is made up of four different liquids, called humors. Each humor is responsible for giving people different personalities and can affect their health if it gets too out of balance. The four humors are: black bile, yellow bile, phlegm, and blood. People felt like if these humors got too high or too low, it could affect their health, and so they tried to find ways to balance them. They would do things like change their diet, take medicine, and even do yoga!