I should first say don’t do it (aka get a full night’s sleep), but who am I trying to fool. Master the power nap. “take a 90 minute power nap before your big event. Harvard researchers found that napping for exactly 90 minutes (no more, no less) can refresh you as much as a night’s sleep. Sleeping for six to eight hours at night helps your brain retain and process visual information. If for some reason you can’t get that much sleep, take the power nap. The researchers found that people who mastered a visual recognition task on a computer performed just as well after a 90 minute nap as they did following a full night’s sleep. Deep REM sleep was sufficiently attained at that length. Take your 90 minute power nap about 3 hours before the important event. You’ll be sharp and rested like you just had a good night’s sleep.” (Discovery, July, 2003) Whether you apply this to the night before or day after, it’s important to get some sleep. No sleep at all is very bad. That’s how you make errors. I’ve heard that keeping your feet elevated while napping is even better.