A friend of mine once wisely said, "It's easy to act drunk when you're drunk."
I find the opposite is true of being sick. I find that I can be sick as a dog, yet still give a very convincing picture of someone who is completely healthy.
Recently, I had a cold. It wasn't one of those colds where I was sniffling or coughing, but I felt congested deep in my chest, had bad sinus pressure, and even felt slightly feverish. Yet every time I walked into a patient's room, I said perkily, "Hi, I'm Dr. Fizzy! How are you today!" Nobody was the wiser. And my germs were thus disseminated.
Like other doctors, I don't like to give the impression of ever being sick. So I'm going to act well, no matter how crappy I'm feeling.
The downside of this, which unfortunately is what happened to me, is that when you're sick with "that thing that's going around," so are other people. So you can be sick as a dog, planning to get your work done and get yourself the hell out, and then you get the call:
"Dr. SoAndSo is going home sick. Can you cover?"
And all you can think to yourself is, "But I'M sick too!" Except you came to work and you have been pretending not to be sick all day, so it doesn't sound terribly convincing. And damn it, you don't want to admit to being sick.
Guess I'll be covering.