You probably already realize that by our standards, Shakespeare spoke funny. And, I don’t mean funny-ha ha; I mean funny-strange. But, in Shakespeare’s day, “humor” didn’t mean funny. Instead “humours” were liquids in the body that they categorized and used to explain emotional behaviours. Below is a chart with the four humors.
If you had to predict which humor Hamlet has too much of, which might it be?
And then there is this one that comes from a medical chart and shows the relationships of direction, seasons, temperament, and the humors of the body.