https://www.mentalfloss.com/science/archaeology/arrowhead-human-blood-likely-used-mayan-bloodletting-ritual
Researchers believe that blood was spilled to "feed the gods."
bloodyarrowheadlikelyusedmayan
https://www.digitaljournal.com/world/it-wasn-t-the-sex-bloodletting-fatal-for-raphael-study-claims/article/574988
A feverish Raphael suffering from "a coronavirus-like disease" died after failing to tell his doctors he had been secretly visiting lovers on freezing
sexbloodlettingfatalraphaelstudy