IamA man, that was dead twice, about 2 minutes at a time, AMA!
My short bio: Motorcycle accident. First "death": immediately after the accident my body shut down from the pain and physical damages on my body. No pulse, no breathing and no consciousness
Second "death": I was in agonizing pain after surgery so I received loads of pain killers. The pain, coupled with an immense amount of pain killers, caused my pulse to drop to around 10bpm and my respiratory system shut down.
http://youtu.be/BMXNa7RnVXE video I recorded 2 days after the accident
My Proof: http://redd.it/2x4mqm
http://i.imgur.com/PyE3Lzk.png?1 One of the doctor notes I found