1. Butting with the head

2. Eye gouging of any kind

3. Biting or spitting at an opponent

4. Hair pulling

5. Fish hooking

6. Groin attacks of any kind

7. Intentionally placing a finger in any opponent's orifice

8. Downward pointing of elbow strikes

9. Small joint manipulation

10. Strikes to the spine or back of the head

11. Heel kicks to the kidney

12. Throat strikes of any kind

13. Clawing, pinching, twisting the flesh or grabbing the clavicle

14. Kicking the head of a grounded fighter

15. Kneeing the head of a grounded fighter

16. Stomping of a grounded fighter

17. The use of abusive language in fighting area

18. Any unsportsmanlike conduct that causes an injury to opponent

19. Attacking an opponent on or during the break

20. Attacking an opponent who is under the referee's care at the time

21. Timidity (avoiding contact, or consistent dropping of mouth-piece, or faking an injury)

22. Interference from a mixed martial artist's seconds

23. Throwing an opponent out of the fighting area

24. Flagrant disregard of the referee's instructions

25. Spiking an opponent to the canvas on his or her head or neck.

The reason these rules are banned...

They cause undo injury to the fighter.