Heat is Essential for Living

Food, water, sleep, and air to breathe: the things we need in order to stay alive.

But, perhaps there is at least one more that we don't class with them that we should: heat. I thought of this one as I stood in the shower, the warm water coursing over my body. At times, the showers seem as if they are almost rejuvinating my body, as if they are having about the same effect that a little sleep has. Perhaps, perhaps not, but, at any rate, it is clear we will die if we do not have heat, if it is too cold, we freeze.

So, I say consider heat transfer to be something the body needs on a regular basis, same as food, water, sleep and air.