Here's more on the moon theory. I have worked at both an ER and a locked Psych unit. You can tell when the moon is full simply by how wild it gets. Perhaps it is a physical thing. The moon affects water and is part of the reason for the tides of the oceans. Knowing this and adding the water content of the human body. Well.........perhaps there is a connection.
After reading some of the other posts, changing from a full-time fireman to nurse was not that big of deal. Of course I have had all of those life learning jobs--construction, lawn mower, tree trimmer, veteran. I have also learned from my mistakes. That's why it is the former life!