Everything seems distant for a second: the room seems dimmer and the lights, by comparison, brighter. sounds seem to echo and sound hollow, as if someone is calling to you through a tunnel. it doesn’t hurt, at least not acutely and not immediately. the most shocking thing about the sensation is the lack of sensation. you can think surprisingly clearly, but the connection between your conscious thoughts and your ability to make your body put them into action is tenuous at best. you can get hit, and your frontal lobe says "I need to circle right and step back to recover and avoid getting hit for a few seconds," but the part of your brain that’s in control is animalistic and survival-oriented, and it usually says "you need to get yourself into the fetal position, curl up on the ground, and not take any more damage." a fight is a constant battle for self control in the face of extreme fear and physical hardship, and getting hit like that is one of the most powerful examples of that fact.