Although the season, and sneeze attack tissues begins with the first frost of fall, the doctors agreed that the remedies Granny can defend too cold to be scientifically proven.
Eighty volunteers, who spent 20 minutes with their feet in bowls of water ice have shown that the packaging is not subject to warm the throat and a stuffy nose.
Although apparently common sense are simple connections between chilling and viral infection was difficult to prove, after the cold in the center of the University of Cardiff - the world devoted exclusively to research and test new drugs to treat flu and colds away.
But the latest experiment reinforces theories that existing, latent infection activated when parts of the body, especially the feet and nose, get wet and cold.
Claire Johnson and Ron Eccles, the center found that 29% of volunteers developed cold symptoms within five days, compared with 9% in the control group, who hung his legs in empty bowls.
All participants removed their shoes and socks and temperatures were monitored throughout the experiment.
When colds are circulating, many people are already infected but show no symptoms, said Professor Eccles, whose findings are published in today's edition of the Journal of Family Practice.
But if they get cold, cause constriction of blood vessels in the nose and closes the warm blood that gives the white cells to fight infection.
But that another explanation might be that our noses are colder in winter. Professor Eccles said: A cold nose may be one of the main factors that cause colds, seasonal.
When cold enough, we wrapped in winter coats to keep warm, but the nose is directly exposed to cold air.
Parents should tell children to be sure of this pack warm winter, researchers say - although the nose protective clothing may be worn by Harry Potter, is a useful fashion accessory.
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