Have you ever had influenza, also known as "the flu" ? 
I've had symptoms before, but I don't think I've ever had the full blown effects of the flu. I don't usually get sick.
Influenza
Influenza, commonly known as the flu, is an infectious disease caused by an influenza virus. Symptoms can be mild to severe. The most common symptoms include: high fever, runny nose, sore throat, muscle pains, headache, coughing, sneezing, and feeling tired. These symptoms typically begin two days after exposure to the virus and most last less than a week. The cough, however, may last for more than two weeks. In children, there may be diarrhea and vomiting, but these are
with direction. Beyond my first or second film, I don't think I've ever had terrible dilemmas based upon resources, but shooting and figuring out how is not a problem, never was. The problems that you have are getting everybody to be on the same page.
Hill says that Bronson was more supportive to work with than Coburn:
[Bronson was a] very angry guy ... Didn't get along with a lot of people. The only reason I can tell you he and I got along well