Can you go limp/unconscious during sex? If so, how? Take the question seriously, please?

I'm asking if two people, maybe a man and a woman together--are going at it so often with so much intensity, could the female partner faint? Without the whole choking thing of course. Is it possible to be so rough that they can be sex'd until limp? Please answer to the best of your ability and maybe explain how a woman could be bone'd limp without asph--...? The choking?