Internal Strikes and Internal Palms

[EULOGY]

I have heard that internal palm strikes or internal strikes can cause one's opponents' muscles to spasm and thus taking away his ability to fight.

If internal strikes are so powerful, then why are they not used in full-contact fights and tournaments, such as the UFC or others like it?

What would be the result if they were?

[Fred Sanford]

someone hit me with an internal palm strike like that, causing my spincter muscle to spasm.

end result is that I crapped my pants. boy is that embarassing.

Are you scare?