I'm afraid you've been duped on this one, all of the reactions to death are explained scientifically, there is no evidence. My friend was clinically dead, he made it back.
This is the stuff of Oprah fodder, along with past life regression, rebirthing, talking to the dead, etc.
He made it back from Where?.. to Where?..
Was he stabbed in the side?
Did blood flow out of him?
Was he wrapped up in cloth and sealed in resin??
Was he buried for 3 days?
Who's been duped?
There might be evidence which is in the favor of "life after death" but which you don't accept; or you feel is not strong enough.
For specific examples which have influenced the opinion of a practicing MD pathologist, click this link and then search for the phrase "autoscopic near-death experience".
No, I do not claim that they are *disposative*, but they do refute your statement that there is *no* evidence.
Cheers!