Technically dying several for minutes after a stroke due to an aneurysm, worst thing I ever felt. They considered me dead, yet somehow everything restarted and I woke up gasping incapable of speech. I was thrown in an ice bath and they induced a coma. And yes, you can hear the outside world and the worst experience I’ve ever suffered mentally. I was in there for what I assumed was decades of masochist torture for realizing I wasn’t awake, despite my minds initial insistence I was. I still question if the acceptance, would have meant my dying and the torture was the pain of trying to stay alive. I eventually woke up to discover it had only been 10 days, and I was capable of basic speech, but my muscles had decayed to the point simple movement was almost impossible. In under 2 weeks, I relearned English and how to walk again. Since therapy, nothing is even remotely scaring as what your own mind can do to you.