What if someone was declared dead . . . only for their heart to start beating again? This is a phenomenon sometimes called "Lazarus Syndrome" or "auto resuscitation after failed pulmonary resuscitation". Dr. Sydnee and Justin discuss the outline of exactly what needs to occur, some possible reasons this might happen, and a few wild examples. 

Music: "Medicines" by The Taxpayers https://taxpayers.bandcamp.com/