Well, -30 C isn't that cold in a dead calm like you have indoors. If I were you I'd dress warmly, maybe a t shirt, a thin sweater, then a thicker sweater, long underwear and some pants, eat some protein rich food, and exercise more. Wear a toque and make sure your neck is covered.
The clothes should keep your body heat in well enough, eating protein rich food increases your body's heat output, and exercise gets the blood pumping faster, thus increasing your body temperature and your metabolism, which also keeps your warmer.
Failing all that, you should look into a space heater. :P