Does cold weather make you sick?
Answer: NO
In studies of cold transmission, people who are chilled are no more likely to get sick than those who were not. It may be that cold weather keeps people indoors, where germs are more likely to catch up with you. Most contagious germs survive and thrive in colder weather, so there are more around to get you sick. That is why you get a fever when you're sick, because your body is trying to eat up internally to kill of the bacteria and viruses in your body that are making you ill. Cold temperature can compromise your nervous system making it work overtime. Your blood vessels and skin will constrict and your hairs will stand on end in an effort to keep you warmer. That is also why you shiver. When the core body temperature drops, the shivering reflex is triggered to maintain homeostasis. Muscle groups around the vital organs begin to shake in small movements in an attempt to create warmth by expending energy. Shivering can also be a response to a fever, as a person may feel cold, though their core temperature is already elevated.
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