Being the geek I am, I usually stay up a minimum of 24 hours when I'm really interested or concentrated on a subject. Below, I'll point out what I do, for those that want to accomplish the feat.

• Sugar

 Increase your sugar intake, not by sugary drinks though. Small candies (gummy worms, etc. )worked the best for me. Last thing you want to do is crash.

• Sleep

Get a good nights sleep the night before.