SHERMANVILLE ILLINOIS
Gold Member
- May 22, 2005
- 7,205
- 60
- Primary Interest:
- Other
As temperatures drop, hats and caps flourish. Even the US Army
Field manual for survival recommends covering your head in cold
weather because "40 to 45 percent of body heat" is lost through
the head. If this were true, humans would be just as cold if they
went without trousers as if they went without a hat. But patently
this is just not the case.
This myth probably originated with an old military study in which
scientists put subjects in arctic survival suits (but no hats) and
measured their heat loss in extremely cold temperatures. Because
it was the only part of the subjects’ bodies that was exposed to the
cold, they lost the most heat through their heads. Experts say,
however, that had this experiment been performed with subjects
wearing only swimsuits, they would not have lost more than 10%
of their body heat through their heads.20 A more recent study
confirms that there is nothing special about the head and heat
loss. Any uncovered part of the body loses heat and will
reduce the core body temperature proportionally. So, if it is
cold outside, you should protect your body. But whether you
want to keep your head covered or not is up to you.
http://www.bmj.com/cgi/content/full/337/dec17_2/a2769
all have a good un..........
SHERMANVILLE
?? hehehe
