It's MAGIC!

[H2Andy]

hmmm... makes sense

so if they learn to fight off the "breathe" impulse, they can last longer b/c
of all the O2 stored in their cells?

 

[bisonduquebec]

David Blain is a magician and really not a stunt man.

He did a few of these "stunts", including a few days in an ice block.
Anyway, It is all a trick. No way he will stay in the tank for the week. If your are a magician, it is an interresting trick. If you are a diver, you should not be concerned since he won't be wet very often.

 

[jwhitlock]

The magic is not that he is in the water for the amount of time or that he's going to hold his breath for 9 minutes . The magic is look at all the money he's making by people watching it on TV. It just goes to show what we have become and how easily we are entertained..........