http://en.wikipedia.org/wiki/Non_24-hour_sleep-wake_syndrome http://en.wikipedia.org/wiki/Non_24-hour_sleep-wake_syndrome http://en.wikipedia.org/wiki/Delayed_

http://en.wikipedia.org/wiki/Non_24-hour_sleep-wake_syndrome http://en.wikipedia.org/wiki/Non_24-hour_sleep-wake_syndrome http://en.wikipedia.org/wiki/Delayed_sleep_phase_syndrome http://en.wikipedia.org/wiki/Delayed_sleep_phase_syndrome http://en.wikipedia.org/wiki/Sleep_apnea http://en.wikipedia.org/wiki/Sleep_apnea My symptoms are exacerbated by a couple other health issues, and the doctors have had difficulty establishing causal relationships. I use a CPAP for the apnea. I feel like I have jet lag if I miss a little sleep. If I miss a great deal of sleep, my symptoms worsen dramatically...I had a stroke when I was 30 after being sleep deprived for too long, for example. I was able to do all-nighters without a problem until I was a senior in college. Then, I worked night shift for seven years to make it easier to cope. The sleep issue was yet another motivator for starting my own company.