Whenever I got wet in the rain. I always get cold (running nose, etc.) I know I'm not catching the virus in the rain. Is the explanation because one's body thermo regulation (hypothalamus) gets affected which lowers the immune system that makes the existing virus in the body multiply? Right now I don't have any colds or health issues. I'm just asking the explanations why one can easily catch a cold when wet in the rain. It's raining now i'm outside and I'm afraid to get wet. Thanks.