Billed as "the safest most dangerous taste of physical and mental endurance pain in the world", the Tough Guy Challenge took place yesterday, February 1st, on South Perton Farm, near Wolverhampton, England. Thousands of challengers (men and women) started the endurance race, with hundreds dropping out along the way due to exhaustion or injury - broken bones, dislocations, and over 600 cases of hypothermia. Even the overall winner, James Appleton, was treated briefly for hypothermia. The course takes racers through 21 obstacles - through mud, freezing water, across ropes and burning terrain. The challenge is also a fundraiser for charity, with funds going to the Mr. Mouse Farm for Unfortunates, which looks after hundreds of retired horses and provides jobs to young offenders. Here are a handful of photos from yesterday's race. ( 20 photos total