Science of winter: How being cold keeps you warm

Today we continue our annual look at what makes this season special, a time when nature is doing much more than just going to sleep for three months. Welcome to the Science of Winter.
When François Haman ran into some Algonquin College students from Senegal, they were piling on as many layers as they could to keep out the cold.
Don’t do that, he advised them.
Haman studies cold at the University of Ottawa, more specifically how the human body reacts to cold and what we can do about