Not a particularly complicated sport in terms of rules. Whoever climbs the ladder the quickest and reaches the top wins. Hard work though. They would make good firemen.

The idea behind this sport was to make the "Ultimate Sport" which combined the brutal physical endurance of boxing, and the mathematical and intellectual aspect of boxing.

This is a good old Welsh sport. Competitors must paddle their way across two stretches of 55ft peat bog. Flippers and snorkels are allowed, conventional swimming strokes are not.

This sport originates from Finland. You prove your masculinity by being able to run through, and over obstacle courses with your wife on your back. The prize for winning this competition? Your wife's weight in beer.

Competitors are reminded before racing that all knife blades must be removed from lawnmowers before arrival, and may not be used as a method of eliminating rivals.

Why are they half naked? Why does anyone have to be naked? Its a sport which only involves your hands!

Not a sport in which you need to be an athlete in order to do well. Just have very quick thumbs and a lot of people in your address book.

According to the Extreme Ironing official website, it is "the latest danger sport that combines the thrills of an extreme outdoor activity with the satisfaction of a well-pressed shirt."

Kick your opponents shins as hard as you can whilst wearing Doc Brown's coat from Back to the Future.

A highly specialised and skill full combination of the talent of unicycling and the sport of hockey. Accidents may occur frequently.