Just want to add... Knockouts in Boxing, MMA, Muay Thai, happen, and yes they are pressure points attacks.
What you should pay attention too is they DO NOT ALWAYS HAPPEN in those sports.
A large target, the head, chin, etc, is a hard target to hit, pressure points like above are even harder. Please read up on the effects of an Adrenal Dump and how it affect fine and gross motor skills.
Then go train in a real fighting style.
Cause Chi Sao death touches ain't it. There's a reason why Death Touch Masters are fat slobs, cause they are lazy bastards.
