marble marsh
In the description for the Four Humors research, it says, "...a healthy body contains of a balance of four humors..."
The first "of" is not needed and it should just say, "...a healthy body contains a balance of four humors..."
Also, if you want to be very particular, where it says, "bile, black bile, blood and phlegm" an Oxford comma would be appropriate, so "bile, black bile, blood, and phlegm"
