Let's be honest. Up to 36 or so is cake. I did that a couple weeks ago. Once you made it through the first night, your body gets back into waking hour rhythms. You kinda go on cruise control but your body isn't real tired unless you let it shut down, like laying on a couch or something.

Basically wake up Fri. 6am(Normal time) work, go home, hang out, wife goes to bed, play poker all night, baby wakes up at 5am Sat. morning, stay up the rest of the day Sat. and get to bed about 9pm Sat. night.

I also did 66 hours w/ only 5 hours of sleep on my last trip to Vegas. 2 marathon poker sessions, 2 rounds of golf in Vegas' Sept. heat, 2 nights of heavy drinking, & a strip club. I was so wiped I actually fell asleep at a $1200 dinner on Sat. night at Aureole.