I have crammed an hours gong bath into 13 minutes for the sake of this video. I play using very light beaters and I play hard. I always play two gong together, this merges the sounds of both gongs together and is very good at creating a drone. I have found that people have been snoring just six minutes in of me playing, either they were very tired and bored or the sounds were impossible for the brain to follow.
During a gong bath I would spend twenty to therty minutes gradual building up to the fast and hard playing that you see in this video and at the end I would spend 15 minutes gentle fading to silence.