Synopsis
Chris van Tulleken uses a miniature thermometer to explore what happens to his body's core temperature in extreme cold and extreme heat.
Similar broadcast resources

Fear Response | The Human Body: Secrets of Your Life Revealed
Chris van Tulleken accompanies some snake hunters at work, showing what happens inside our bodies when we experience fear.

The body's response to extreme cold | The Human Body: Secrets of Your Life Revealed
How do our bodies react and respond when we dive into freezing water?