Meet the world's fittest man

The world's fittest man title holder, Rich Froning, is not boxer, cyclist or a marathon runner, in fact odds are that most of the people haven't even heard of him.

Froning, who worked as a firefighter, is now a professional CrossFit athlete.

CrossFit is a mixture of aerobic fitness and weight lifting and its staple is the Filthy 50, which is a brutal series of exercises which includes 50 repetitions of 10 different exercises, all done as quickly as possible.

50 Box jumps, with a 60cm/45cm box, 50 jumping pull-ups, 50 kettlebell swings 16kg, 50 walking lunge steps, 50 knees to elbows, 50 push press of 20kg, 50 back extensions, 50 wallballs using a 9kg/7kg ball, 50 burpees, 50 double unders, News.com.au reported.

Froning is capable of deadlifting 240 kilos, squat 190, bench 150, clean and jerk 150 and snatch 120 and is believed to be as aerobically fit as an Olympic swimmer.