I think some people are aware of that. Some people can sense things in their bodies to that degree, and some have even acurately predicted the day and hour of their death. I've volunteered for hospice, and I think death is every bit as mysterious as life.
if you have ever read any of Jung's work on the universal unconscious.. it goes against logic but something sends to be at work here ... they have done scientific testing on learning noon sense rhymes in schools that support the more who learn it the quicker the next lot learns it .. it's an interesting area to read up on
It is impossible to feel it. You can only feel uneasy or accept the fact that it may become a possibility once enormous change occurs. If you are working in a large store and two men with guns come in, there is a good possibility your body will react and send all of its energy towards your heart and your brain to attempt to combat the threat you have identified. <br />
The only time one can truly feel death approaching is if that person is being treated for cancerous or deadly diseases within the body, that or old age. It is too difficult to know whether or not we can sense death, but we can embrace the feeling and project exactly what can happen to ourselves within a short period of time.
It's probably not the case for everyone, but yes, I think some people can and do know beforehand. I also think we can "feel" it when someone we know is about to die, it's happened to me a few times.
Depends how you die I guess.