PAUL Nicholsen, a 6-foot-3, 90-kilogram web developer who does CrossFit and runs marathons, decided to take part in a Tough Mudder race in New Jersey with friends in 2013.

At one point Saturday, City Hospital in Martinsburg, W.Va., was so overwhelmed with patients injured on the Tough Mudder obstacle course that it had to turn people away from its emergency room.Two ...

Tough Mudder – which rose to fame with extreme endurance events featuring some participants getting electrical shocks or crawling under barbed wire – is splitting into two companies as its ...

Business Insider spoke with CEO and founder of Tough Mudder Will Dean, about why electroshock therapy is used on some of the courses. He said: "The secret to becoming more confident in life is ...

I t’s no secret that Tough Mudder, the fast-growing, wildly popular obstacle course event, carries injury risk, with its electric shocks, 15-foot jumps into freezing water, and runs through fire ...

Tough Mudder is famous for its extreme obstacle courses. But even employees who aren’t scaling walls for a living are encouraged to push real-world boundaries.

And there was a gentleman with a prosthetic leg who started in our group, and he finished 3 hours after us, but dang, that's the REAL definition of TOUGH. He's a fighter, just like you. He pushed ...

Tough Mudder events are hardcore 10-12 mile obstacle courses designed to test strength, stamina, mental grit, and camaraderie, the organization's website says. Athletes took up the challenge over ...

So that’s what I’m doing next weekend: getting electric shocks. As many as 10,000 volts … right to my face. I can hear a few politicians applauding. It’s called the Tough Mudder — a 12 ...

So that’s what I’m doing next weekend: getting electric shocks. As many as 10,000 volts … right to my face. I can hear a few politicians applauding. It’s called the Tough Mudder — a 12 ...