If you have trouble trying to sleep, if you stay awake late into the night, and can't get up before noon, your body clock rhythm has been disturbed. These are because of a treatable condition known as delayed sleep phase syndrome:
AOL Health:
Since George was a high school freshman, he had experienced problems falling asleep before 3:00 a.m. He routinely looked forward to weekends, when he could sleep until noon. Getting up for school at 7:00 a.m. was a major challenge. He was chronically sleepy and often looked for an opportunity to snooze -- even in class.Read More......
George shared his concerns with his academic advisor. His advisor was the first person to suggest that he see a sleep specialist. George went online and found a directory of sleep centers accredited by the American Academy of Sleep Medicine. He found one located near his campus. He went to his appointment feeling hopeful that something could be done to shift his internal body clock to a more conventional sleep-wake cycle.
George was excited to learn about circadian rhythms. He was more excited to learn that he had a treatable condition known as delayed sleep phase syndrome. The specialist explained that a part of George's brain known as the hypothalamus generated biorhythms, including the circadian rhythm responsible for the sleep-wake cycle. For unclear reasons, George's rhythm had been shifted during his teenage years. George was happy to learn that many other young men and women shared the same difficulty. He was ecstatic to learn that his delayed sleep phase syndrome could be treated.




