Meet me in a dark alley once and find out.
We are all born with a brain that is a virtual combat computer.
Most people never do anything to maintain that part, but some few paranoics among us, living in countries where you can't take your AR-15 along when you go shopping, do.
With enough practice, one can anticipate an opponents move, simply by reading his body language.
Any untrained fighter will telegraph his move by positioning his body before striking/kicking/whatever.
In stead of seeing an opponent as a human body, you get to where you see him/her as a smorgasbord of opportunities for retaliation. But the "seeing" is done and computed way faster than you can think it through..........more like instinct.
That is , in it's pure essence, what lifelong studies of martial art is about.
Sharpen your fighting sense ( I like calling it the combat computer) to where it takes over and reacts faster than you can think.
Anybody who has spent a lifetime dedicated to the study of martial art, can tell you stories of reacting to an attack, faster than it could have been done consciously, and actually being surprised afterwards, as in " Did I do that"?
Answer enough or do you want me to elaborate?
This should probably have been in the " Martial arts " thread, but then I would have been beaten up in a parking lot by someone with 5 bigger brothers.