Illusionist David Blaine has said he found the backlash against his 44-day stay in a plastic box in London "a little scary" but has now grown used to it.
David Blaine is due to emerge from his box on Sunday
He also said he was unlikely to embark on another stunt of this magnitude.
The American is nearing the end of his self-imposed fast, suspended by a crane near the River Thames, and is due to leave his box on Sunday.
Speaking to CNN via a video link he said it had been "so much more difficult than anything else I have ever done".
He added: "I don't think I can do anything like this again."
Since the magician entered the Perspex box on 5 September he has had to contend with a campaign of "Blaine-baiting" with passers-by taunting him with egg throwing and constant noise.
But he told CNN that it was "to be expected".
Speaking about his stay, he said: "It's been really cold, and when you are starving, your body only produces one-third of its heat.
"It's been 40 degrees Fahrenheit some nights. It's really hard to sit, and all of my muscles are really weak."
Moon and clouds
This has been Blaine's most audacious stunt, having previously spent three days in a block of ice and 36 hours atop a pole.
Although there is a certain amount of cynicism surrounding the feat, Blaine denied it was all a trick.
"No, I am really here doing what I said I was going to do," he said.
"I have never decided to do anything for this length of time.
"Here, basically I am a human being on display to all kinds at all times."
He added that the best part of being isolated were "the faces, the moon, the sun, the rainbows, the clouds, everything".