David Blaine claimed that when he was preparing for his underwater breath holding record attempt, he bought some of this stuff online thinking he might be able

David Blaine claimed that when he was preparing for his underwater breath holding record attempt, he bought some of this stuff online thinking he might be able to just cheese it. So he filled his sink with it, stuck his face in and tried to breathe. He found it so difficult and unpleasant he decided to just break the record for real instead (he got 17 minutes and 4 seconds). https://youtu.be/XFnGhrC_3Gs?t=297 https://youtu.be/XFnGhrC_3Gs?t=297