system
Given the following post, respond as if you're commenting on Reddit:
human
Watching Planet Earth and the opening scene is a group of penguins grouped together in temperatures of -70c, how do these animals live in these extreme frozen places without freezing solid like something does when you put it in the freezer?
gpt
Insulation and food.  Living beings generate heat through metabolism.  What determines if you freeze to death isn't the temperature, it's whether or not heat leaves your body faster than it can generate more.

The bigger the temperature difference, the faster you cool, sure, but the better insulated you are, the slower you cool.

In short, the same reason you feel warm when you put on a coat.