Some studies imply that being cold cause illness. Some arguments
indicate that if you’re cold, your body is more stressed and therefore less
resistant to fight a virus. Research by Cardiff University’s Common Cold Centre
in Wales has proven that a drop in body temperature can cause a dormant cold
virus to develop.
If a person becomes chilled, for example by wearing damp clothes in cold
weather, the blood vessels in the nose become constricted. When this occurs,
the warm blood is closed off and no longer supplying the infection-fighting
white cells.
One study involved the effects of volunteers placing their bare feet in
an empty bowl for 20 minutes or soaking their feet in a bowl containing ice cold
water for the same length of time. Within five days after the experiment, more
participants who had soaked their feet in cold water developed cold symptoms
than the other participants.
Lowered temperature settings can cause the body to be more immune to a
cold and there are not suggested by professionals.