Nordini, the man who said he can stop his heart’s beating at will, also claimed he could hold his breath for extended periods of time, and was buried under a ton of sand to prove it. Is that more or less impressive than David Blaine doing the same stunt in a tank of water? According to the article, Nordini was able to stop his heartbeat for 20 seconds. David Blaine said that in his breath-holding stunts, he was able to slow his heartrate down to 12 beats per minute. Nordini wins.
SAYS HE CAN STOP HIS HEART’S BEATING AT WILL: Nordini Gives Exhibitions of Unusual Muscular Control That Astonishes Investigators. (PDF)
From December 25, 1910