亚洲口交很长时间

If you look at an infrared image of my hand, you can see how quickly the cool water can steal the heat away from the muscles of the hand.

The darker the image becomes, the more heat is lost.

Your extremities lose the heat the fastest, but they can afford to lose the heat.

It's your core that can't afford to lose any heat.

Let's see how fast our warm core gets cold.