none of that is humanly possible.
it's all illusions.
You're kidding right? Did you even watch the video?
How David Blaine Held His Breath - TIME
Also, his record has now been broken by Tom Sietas at 22:22
I met some sages in India and Tibet who can hold breath for days.
the ice thing is real.
some kid up here tried to walk the river trought ice, ice crushed and he was 'dead' for 30 mins before they took him out - he had no brain damage