Take the 2-minute tour ×  A little background:  I was practicing
with my instructor one morning. It was just him and me and we
were doing free training of submission grappling. At one point I
managed to get him in a choke hold and I expected him either to
break free or to tap out. When I looked down at him his eyes
were rolled back and only partially opened. I released him and
he lay there gasping for a moment. I asked him if he was alright
and he kind of blinked a few times and said "Of course I'm
alright, why do you ask?" I replied "Because you appeared to be
dying." None of his students had ever beaten him before in
submission grappling. He told me later that he thought to
himself "this is a tight choke, I should consider tapping out"
and then he saw himself running through a meadow, without a care
in the world.  It kind of freaked me out a little, because we
were the only two people there, and I wasn't sure what I would
have needed to do if he hadn't immediately woken up (other than
call 911). I know some