Ahh-something I do know a little about. When somenone is cold all the time and others are not, it is usually because they are anemic (low iron in blood). Here is something you can try that should have you warming up in no time. Go to your nutrition store or local supermarket in the dietary supplement section (I know my supermarket has one) and buy over-the-counter iron supplements. Take as directed and in a week or so, you should notice a big difference. You could also go to your doctors to get a CBC and iron levels checked to see your blood count. Funny how bodies react to such a minor change, but it is very possible that this is what is wrong. Best of luck to you!
Desiree'