What's driving the popularity of extreme obstacle racing?

Navigating electrical wires,wading through deep pits of mud, swimming throughfreezing water these are just some of the tasksfacing those who enter the world ofextreme obstacle races.

For insight on the culture of these gruelling events, guest host Candy Palmater checks in with Spartan Race participant Tony Matesi as well asGavin Weedon, UBC KinesiologyPhD student, whoseresearch focuses on these extreme obstacle courses.