You have to crank up the heat, so to speak! We used to keep the house cooler, at around 62F, in our younger years. But now, we're really not comfortable until we get a fire going in the wood stove and allow the house to reach 67F. Of course, once in awhile the indoor temp. soars to 70F and we are all sweating...and, our female greyhound starts panting out of control;-) There is a fine line between too cold and too hot in the wintertime!
As I write this, it is 14F outside and there is a skating party on the pond. I could have gone over to photograph the skaters in the dark, but decided to stay warm in the house...hmmm...gotta get my winter motivation going!