Cage fighting, also known as Mixed Martial Arts (MMA) is considered one of the most violent and brutal sports on the planet, its participants equally violent. 

Fights take place in an octagonal steel cage in front of thousands of screaming fans. The knockouts can be vicious and fighters often leave the cage covered in blood.

MMA is therefore sold to the public as "bloodsport” and, as a result, it has garnered millions of die-hard supporters and harsh critics alike. 

But there is another side of the sport of which few are aware.