It was peculiar to note that people who are short-sleepers also share a slight manic trait in their personality. While the article makes short-sleep cycles out to look like all sunshine and roses it is not all it is cracked up to be. I get between 2 and 4 hours sleep a night and on a good night I get 6. I have to monitor the sleep I am getting because if I allow myself to fall into a cycle of 2 hours for an extended time I start to have problems with my heart and abnormal rhythms. If the > 4 hours cycle goes on for more than a week I have to start taking medicine to sleep to ensure that my body is receiving an adequate amount of sleep. I see no negative effects if I get 4-6 a night, but it is probably safe to assume that short-sleep cycles rides the line between good and bad health. I never considered myself a short sleeper I just figured I have insomnia but never worried too much about it because I feel no different if I get 4 or 8 hours of sleep a night (if I can get 8) and the fact that my father and grandfather shares the trait and are healthy (grandfather is almost 90) . On the plus side, I experience more life and get more done which are really the only benefits to sleeping less.