Why? How? 

I  asked Josh Nelson, Dr. Nelsons nephew and himself an Emotion/Body/Belief Code Practitioner of many years standing,  about this in a seminar  he was leading, and this is the answer he gave: 

" There's a couple of really unique things that happen here ...when Dr. Brad is doing a demo session and there are people watching, or if there are going to be people watching it on a video for instance, we've noticed a pattern where things seem to be more effective and more profound.

For example, when we are on stage at an event and we pull someone out of the audience and we work on them and everyone else is watching, the results seem to be more profound and we've labelled that "the bystander effect".

 Where there is a collective faith and energy, the energy in the room is just higher ... things tend to speed up. "

He further says... 

This is a unique scenario and it is much more normal for 10 - 12 emotions to release in a session and for there to be several sessions.