The Mandelbear's Musings

According to one article I read, how refreshed you feel after sleep depends on what part of the sleep cycle you were in when woken. And those people who get by with almost no sleep supposedly do it by taking naps in which they fall asleep quickly, do one sleep cycle, and then wake up. They space their naps through the day, and can have total daily sleep times of four hours or under. Further research seems indicated.