Tom Hanks suffered a staph infection during Cast Away filming.
Well, he didn't force the staph infection onto himself, but an untreated cut led to a staph infection. It got so bad because he was so deep within the character that the infection almost killed him.
And a reminder: Staph infections are contagious. His "method acting" showed disregard for his health and others around him.
Me too, Pal.