David Blaine broke the world record for holding one’s breath today when he was submerged for 17 minutes and 4 seconds during a taping of Oprah. The endurance artist looked relaxed emerging from a water-filled sphere, the AP reports. Blaine had undergone simulated altitude training and pure oxygen treatment to prepare for the feat. The previous record was 16 minutes, 32 seconds. (More David Blaine stories.)