This is a true story.
The mind is a powerful machine. It controls your body's functions. It can even cause death. One man was doing clean up duty in a train yard. He enters a freezer car when suddenly the door shuts. He screames and yells, but no one comes. Later he is found dead with a note saying I am so cold I love you (i forgot his wife's name). He froze to death. The car he was in had a broken cooling unit. It was 87 in the car when he died. When the morgue did the autopsy(sp) they concluded that he froze to death.
This all goes to show do think about things to hard. Might come true.