The heartbeat video is a 20 second recording of a group of people, participants, or audience putting their hands over their hearts and CLAPPING on their chests. The sound should be something like "clap clap" or "boom boom"... two taps on your chest with two hands. Over and over. When more than one person do it at the same time, this sound should increase. The more, the better. Record it and send us the video. We will combine it with the others from around the world. Watch this video to see an example.