In case you didn't know, David Blaine broke the world record for holding one's breath. He was under water for 17 minutes and 4 seconds, beating the previous record of 16 minutes and 32 seconds. All of this live on Oprah!!
Apparently, he was always fascinated by holding his breath, even as a child. The pain you feel when holding your breath is caused by the build up of carbon dioxide. If you get over that, your body can continue to work on the oxygen it has stored already.
Blaine took in pure oxygen before submerging himself. Amazingly, it doesn't look like an illusion but the real thing. That guy is f*cking crazy.