Chapter 5 touched on the concepts of circadian rhythm, as well as the various stages of sleep. This made me remember an article I came across thanks to Stumbleupon. Below I have included the link to the specific article. It talks about nontraditional sleep cycles, and the success thereof. One of the cycles listed is called the Biphasic sleep cycle. This is the sleep cycle that most college students use. It consists of a shorter night's sleep, and a midday nap. The sleep cycle that I find most unique is called the Dymaxion sleep cycle. It involves four naps, 30 minutes each, perfectly evenly spaced. A diagram of this is shown below. What is so shocking is that people on this sleep cycle only get two hours of sleep each night. However, according to believers and users of this lifestyle, as long as they adhere strictly to the plan, they have few to no negative effects. It simply seems shocking to me that it is possible to get such little sleep and still be able to focus and succeed at day to day living.