One famous Guiness World Record holder feared for his life and sanity while trapped in a block of ice. It wasn’t the stunt itself that spooked self-professed street magician David Blaine, it was the sleep deprivation. He described five days without so much as a nap as the most horrific thing humans can experience, in a recent interview for the book “Wide Awake: A Memoire of Insomnia.” The Guiness