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You appear to be right about 4 being false,
I think 5 is right though, it's just that getting out in the cold when you are already ill makes it worse?
And here's what I found:
Does your heart stop when you sneeze?
This is a commonly told old wives tale that has no real scientific grounding. When you sneeze, muscles in your abdomen, chest, the diaphragm, the vocal chords and other muscles in the throat are all involved. These are all co-ordinated to work together at the right time during a sneeze along with the eyelid muscles which ensure that your eyes are closed when you sneeze.
The heart is not really part of this process. One heartbeat lasts longer than a sneeze. The actual sneeze without the run up part lasts only a fraction of what a heart beat would last. The heart is made up of a special type of muscle that beats involuntarily and even outside the body a heart can contract, although it would do so in a less co-ordinated way. The nervous system regulates the heart and ensures it beats in a controlled way inside the body. The heart would not actually stop beating during a sneeze but the heart rate may change as the process of sneezing does increase blood pressure inside the chest, which in turn affects heart rate and blood flow.
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Contrary to folk wisdom,
exposure to cold does not seem to be responsible for catching a cold or the flu. A study published in the late 1960s, for example, showed that chilling volunteers (actually, prison inmates) did not make them more susceptible to infection with rhinovirus, one of the kinds of viruses that often cause colds, and did not make their colds worse.
Presumably, the reason people think exposure to cold causes colds and flu is that these illnesses are much more common in the winter. People figure that it's the cold air (the most obvious difference between winter and summer!) that causes the infections. Most people think it's true because when they get a cold in the winter, they think, "Last week I was out in the cold air, and now I'm sick." But they're not thinking of all the times they went out in the cold and didn't get sick.
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That being said:
I find the thought of John Travolta as "Tootsie" positively hilarious!! :bounce: