They used their heads like it was a battering ram. Night after night they would risk concussions, injury and even death.
Yes, there are some parts of wrestling that are REAL!
In many cases in the prime of wrestling (the 1970s and 1980s), wrestlers used their heads as weapons against their opponents with the idea that if they caused the man across the ring from them to lose any sense of direction or focus, it would help score a pin fall or submission.
But having a hard head is not just about using it to win a match or inflict damage. There have been many wrestlers who have taken shots to the head repeatedly and have used that as part of the their character. Some, like Sandman, are known for smashing things with their skull to the crowd's delight.
And then there are some that headbutt the crap out of an opponent (Haku/Meng) until they fall in a heap for the pin fall.
Today, we don't see this tactic as much. While there is a certain drop off in the tactics of today's superstars, the headbutt or the use of the head is not as successful as it used to be.
Here is a look at those wrestlers whose heads have made it through the battle zone and have the scars to prove it.