The heart can stop for a period of time and the body will still function. For example, a fish can still flip after you cut its head off. This is a natural response everybody has.
The baby's heart possibly stops a few seconds. The body is still alive. The rest of the baby's physical parts recovered quickly in the fridge and then the physical parts freeze. The announcers thought the baby is dead. The announcers announce the baby is dead. When the baby's heat is revived, the heart starts to pump again. The announcer accidentally announces the dead baby is alive again. So you see, the baby was really under the highest spasm.
It's sort of holding breathes underwater. A group of cruel and popular group decide to make fun of a person. They told the person to do the follow:
A person holds breathe and closes his or her eyes. The person tries to stop his or her heartbeat. Some actors/actress can act like they don't have heartbeats. The person lay down in the water.
The person did all of the above. The popular group buries the person with wet sand. The popular group thought the person is dead. A lifeguard digs the person's body out because he or she is bored. The lifeguard told the person that the popular group is punished and the popular group isn't really popular. The person breathes and moves. Person's heart beats. The "popular" group decide the person is magically reborn. The "popular" group tries to run away from the person.