Quote Originally Posted by Metaphor
When you die your brain releases a chemical DMT, its highly potent hallucinogen. Suposedly this chemical also causes extreme dilation so the last few seconds of your live feel like an eternity. Scientists also believe this chemical is what causes dreams. Dont take my word for it though. Dimethyltryptamine - Wikipedia, the free encyclopedia
I always wondered about what happens after you die too. I did hear the same thing as above from my high school chemistry teacher.