David Blaine has begun another endurance challenge

David Blaine has begun another endurance challenge - hanging upside down for almost three days.

He intends to remain there until late Wednesday, despite doctors' concern about the effect of the stress on his internal organs and blood circulation.

Magician David Blaine hangs upside down above Central Park's Wollman Rink in New York as he begins his latest endurance challenge 'David Blaine: Dive of Death' Monday morning Sept. 22, 2008. Blaine plans to hang upside without a net for 60 hours concluding his challenge with a plunge

Blaine had complained of the pressure of blood rushing towards his head - which doctors had warned could blind him.

But the surgeon advising the illusionist insisted he was coping well.
Massimo Napolitano - the chief of vascular surgery at New Jersey's Hackensack University Medical Center - said, "Everything looks good, the blood pressure looks normal. He's doing very well considering that now it's been about 29 hours that he's been hanging upside down. "His vital signs are fine. He's in very good spirits. All his organs are working well."