I used to freeze my wazoo off all the time. Even in Summer, it'd be 113 out, and I'd be shivering like a chihauha stuck in the freezer! Everyone had jolly fun with it, too: "Don't forget to grab a sweatshirt for Dee 'cause it's going to be 113 today and we don't want her getting frostbite or suffering hypothermia". They'd laugh and I'd just roll my eyes and take that sweatshirt so that I could get somewhat warm and at least feel my hands again.
But then, Hubby moved me to "nearly Canada" and now I'm fine. In fact, I'm almost too hot most of the time. Dang near to melting, is more like it. My house is kept almost to a chill and Hubby will plead for me to turn up the heat because the cat's turning into an icecube and he can't feel his toes anymore (whimp!). I've found that there are a few things that one can do to help be warm: Ginger tea is one. Eating lots of hot peppers is the other. Ginger is a warming agent so it helps the body warm up from the inside out and peppers act like a natural "anti-freeze" that keeps you warm in winter and cool in summer. A friend of mine used to eat cayenne pepper on EVERYTHING just before a climb into cold country and he said it works like a dream! Even for those that don't rock-climb, it works! For extra-cold days, a little cayenne on the soles of the feet before you put socks on keep a person toasty, too. Just don't do too much. I did one time, and I felt like my feet were on fire all day but it's really nice if you get the amount right. If the feet are warm, the rest feel warm and it's nice.