David went on: "I've always thought 52 should be the mark, you don't want to push until you break, I have a few more years of pushing and then I'm going to shift to what people like to see me do more which is magic and bringing that to kids in hospitals which I love doing, you get the best reactions.
"He stayed very fit, he was rock solid, and he had done the water tank on stage, collapsed, because he didn't want to disappoint the audience even though he had severe stomach pains and he was rushed to hospital and died.".
"There's one that's a culmination of everything I've ever done that I'm obsessed with but it's a pretty over the top ambitious idea so I'm trying to put it together and it will be my last one before I move on to card tricks.".
Five years ago, David was lifted into the air by balloons - one of which was reportedly an experimental aircraft - in a move reminiscent of Pixar's Up.
The escapologist and illusionist has confirmed he wants to retire next year at the age of 52 - the same age his hero Harry Houdini died.
