3 points
To add, I remember being told (rumor?) the reasoning for the 100° body temp was that it was created before modern medicine and was supposed to be the avarage temp of the population given that being slightly febrile was supposed to be normal.
(I don’t know how true this is as I don’t really care about the imperial system and don’t really feel assed to research it. Just relaying what I’ve been told)
