My entire hospitalization was only 18 days, from arriving in the ER after being run over, having spinal reconstruction surgery (rods and pins T10-L3...
Humans seem to have an instinct driving their ability to be attracted/respect/admire and/or willingness to follow another person. Assuming these are satisfactory definitions of the tangible effects charisma (as opposed to comeliness, or raw physical attraction.)
I was first exposed to this idea by Joseph Campbell in The Power of Myth, followed by Hero with a Thousand Faces. Compelling works.