Meet Shaun Baker, king of the waterfall kayak, who knows how dangerous each exploit can be, and Felix Baumgartner, who made a 30,000 foot freefall across the channel.

What is it that makes people hurl themselves from buildings, surf subway trains and try to push themselves beyond the limits? Xtremists explores the apparently unstoppable rise of extreme sport.

Starting where it all began for extreme sports - South Pentecost in Vanuatu. The locals here invented the land dive - what we now know as the bungee jump - an adrenaline thrill that has since been experienced by millions.