Although I have absolutely no belief in this because it misrepresents Mayan culture and is completely based on theory with no valid evidence but people who get overly excited because their clocks are 5-minutes off. If we were to die, it would be instantaneous, plus, looking on the bright side: You don't feel anything when you're dead, so your fear just lasts about 5-minutes before you are actually deceased. Also, people, if you're so worried, don't be sad, enjoy your lives, fear of death is so much more painful than actually dying.