I came across this article and was surprised by some of these myths on the Medical Center of University of Rochester site. Here are a couple of myths they examine.
For example is dressing in layers the best way to keep warm?
By Rieben, Craig L, U.S. Fish and Wildlife Service [Public domain], via Wikimedia Commons
Or whose hands and feet get colder first, men or women?
Please read the article here http://bit.ly/KtISPv to find the answers to these as well as several others.