Ecuador

Five young British men take on the challenge of a lifetime - to spend four months travelling the world, taking on some of the most deadly creatures and hostile places on the planet.

To start their epic journey they travel high into the Andes where they must become chagras - the weathered, hard-as-nails cowboys of Ecuador. They do battle with the local, deadly fighting bulls, many of which end up in bullrings across South America.

The Brits arrive at the busiest and most dangerous time of year, the rodeo. This is when thousands of fighting bulls are rounded up in the mountainous foothills to be counted, branded and vaccinated. They have six days to prove themselves and, if they are good enough, to take part as one of the locals. Top chagra Gerardo has the task of training them.

To become chagras the boys must learn to ride like chagras and to use a lasso, practising skills to avoid being impaled by a charging bull. It's a tough crash course. How will vegetarian Ben cope where slaughter and steaks are a part of everyday life? What about new age traveller Reuben, who isn't used to following orders? Can any of them deal with the threat of altitude sickness at 4,000m, or the heavy drinking of the local chagras?