Introduction

Human beings are capable of some truly astonishing feats.

On 30th April 2008, David Blaine held his breath underwater for a world record breaking 17 minutes and 4.4 seconds, live on the Oprah Show. Wow!

In 2007, Lewis Pugh swam a kilometre in the Arctic Ocean at the North Pole. It took him 18 minutes and 50 seconds. Conventional wisdom tells us that hypothermia takes effect when our body temperature drops below 35 degrees Celsius. The water temperature at the North Pole for Lewis' swim was 1.7 degrees below zero! That's impossible, right?

If you think that sounds bizarre, John Evans balanced a car (yes, a real, live 159 kg Mini Cooper) on his head for 33 seconds; no hands. Amazingly, it's a Guinness world record, not an April Fool ...

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