If only I had more time in the day! How often have you said that? Whenever you are at your busiest and most stressed you have probably looked at the 6 or 8 hours a day you spend asleep and jealously think that there are all sorts of other things you could do with that time if you weren´t asleep. One of the Holy Grail´s of productivity, then, would be to find a way to sleep less while still being as rested and effective as you now are.
Polyphasic sleep is one such theory. The basic idea is that, instead of sleeping 6 or 8 hours at a time, you have a 20 minute nap every four hours. That means that you only sleep 2-3 hours per day, and you are awake and able to work throughout the clock. This isn´t supposed to be a short term solution, either. The theory is that you can completely replace your current sleeping method (called, logically, monophasic) with this new approach without feeling less alert or more tired. I´m not sure I buy it, but it´s an interesting idea.
Steve Pavlina has assembled an incredibly complete account of the polyphasic experience. To get a true feel of how well it works, Pavlina tried it out. He kept a log of his experience from the first day to three months in and beyond. It´s a thorough an interesting account, and he certainly seems convinced. It´s definitely worth checking out.