 is for you to learn what most Arctic animals have that helps keep them warm. Nope. It keeps you warm because what you're going to do is we're going to put a glove fat in. Fat also helps those animals do what? What is this fat doing? It's floating. So you're going to put one hand in this fat and see how it helps this hand stay warm. Your other hand you're going to put right into the ice. And you're going to see how long you can leave that hand in just the ice. And it is really, really cold in this ice water. My hand is already starting to hurt. I can't handle it any longer than that. But this hand in the fat, guess what? Warm. Nice and warm. The other hand in the ice water and see how long you can hold it in there. 20 seconds you made it. Which one would you rather? If you had to go swimming in the Arctic, what would you rather have? Fat or no fat? The fat keeps them warm and how that's what they want if they were in our cave.