In cold weather, your body has to burn more calories to keep warm. This would be the perfect weight loss solution....walk around at your residence in your underwear with no heat on. But how are we going to sell this solution, and make a profit ? That will be the difficult part.
As dude I want to build lifting muscles and necessary twitching muscles. When you body go into shivers mode you just stand there because you don't want do lose more body heat. Most weight lost can be easily done though diet and self control.