I actually looked at the video and dont really think he did <i>that</i> bad. I mean it was obvious that he was having trouble putting his thoughts out there, but it wasnt like he was just completely mute. Relating to my experience, Im not ever on TV, but lack of sleep(meaning anything less than say, 7 hours) severely impacts my overall anxiety level. I am the kind of person that cant skip a night of sleep. I feel awful and unless something is absolutely necessary, like surviving, I call it a day and try to get some sleep. Either way, it was great of him to write about the experience.