Here you have a better explanation of sleep cycles http://en.wikipedia.org/wiki/Sleep#Sleep_stages http://en.wikipedia.org/wiki/Sleep#Sleep_stages You can als

Here you have a better explanation of sleep cycles http://en.wikipedia.org/wiki/Sleep#Sleep_stages http://en.wikipedia.org/wiki/Sleep#Sleep_stages You can also try polyphasic sleep. The easiest form of polyphasic sleep is biphasic sleep (with a nap), but there are other sleep regimes which can take you a month or two to get used to, but people who have tried them say gives them lots of time to do everything. The most difficult to adhere is Uberman, and most people who have tried it say that Everyman is quite easier to get used to. http://en.wikipedia.org/wiki/Polyphasic_sleep http://en.wikipedia.org/wiki/Polyphasic_sleep There is much information regarding this subject on the internet, so just google for more information if you are interested on this.