I didn't know how i managed to finished this clip. It's around at the end, i really feel that i'm at my absolute limit. After around two days i got fully recovered from headache, etc. This is by far the longest single breathplay session that had ever done. I put an additional layer of shrinking bag at around 10 minutes because i'm feeling good by that time. (I must be out of my mind...) The price is high but i believe the content justify it. You probably wouldn't find anyone else that could stay in a shrinking bag for over TWENTY minutes. Thanks for watching.