i argue daily with my parents about this. you can't get sick from being cold!!!!! they don't believe me! i know when you're cold, it weakens your immune system or something like that and then that makes you more vulnerable to catch a cold but that doesn't mean that you will infact catch a cold. i mean, can't you wear a tshirt outside on a cold day and not get sick? my parents think you can. i need some facts here people. my parents need to be persuaded. help!