I remember laughing an inordinate amount of time. Setting up scenes that involve ooze coming out basements, or pigs' heads flying through windows is really fun. How could you not laugh?
What you do as a policeman might be the right thing to do, but it's not entertaining. I left that behind me.
Hospitals are great places, and you can learn from them, but you don't necessarily need to go in anytime you get the sniffles. And maybe you shouldn't treat pregnancy as a disease.