Leave the tin cans behind, the real Iron Men are coming to Berlin and they don't need a super suit orshiny shins to pull off some herculean feats that most men could only dream of; these world class athletes are superhuman all on their own.

Some of the most physically fit athletes in the world are converging on the German capital for one of the most grueling tests in sports.

It takes a rare breed to be able to partake in an Ironman competition. You test your body in ways you never thought imaginable. Watching some competitors physically break down, their bodies failing to move another step, can be hard to watch.

The high that would come from completing one of these events must be second to none, though. You know you're tough if you can handle something as difficult as this.

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