jaa ei ollukkaa insomnia, löysin itseni wikipediasta.
http://en.wikipedia.org/wiki/Delayed_sleep_phase_syndrome
Often, people with the disorder report that they cannot sleep until early morning, but they fall asleep at about the same time every "night", no matter what time they go to bed. Unless they have another sleep disorder such as sleep apnea in addition to DSPS, patients can sleep well and have a normal need for sleep. Therefore, they find it very difficult to wake up in time for a typical school or work day. If, however, they are allowed to follow their own schedule, e.g. sleeping from 4 a.m. to noon, they sleep soundly, awaken spontaneously, and do not feel sleepy again until their next "night". <- Ne jotka tietää esimerkiksi vuoden takaisestä kesästä voi ymmärtää miksi tuo tuntuu minusta ainakin niin tutulle.
DSPS was first formally described in 1981 by Dr. Elliot D. Weitzman and others at Montefiore Medical Center.[2] It is responsible for 7–10% of cases where patients complain of chronic insomnia.[3] However, as few doctors are aware of its existence, it often goes untreated or is treated inappropriately. DSPS is frequently misdiagnosed as primary insomnia or as a psychiatric condition.[4]
People with DSPS have at least a normal - and often much greater than normal - ability to sleep during the morning, and sometimes in the afternoon as well. In contrast, those with chronic insomnia do not find it much easier to sleep during the morning than at night. People with DSPS fall asleep at more or less the same time every night.
DSPS is often confused with psychophysiological insomnia, depression, psychiatric disorders such as schizophrenia, ADHD or ADD, other sleep disorders, or willful behaviour such as school refusal.
In the DSPS cases reported in the literature, about half of the patients have suffered from clinical depression or other psychological problems, about the same proportion as among patients with chronic insomnia.[5] The fact that half of DSPS patients are not depressed indicates that DSPS is not merely a symptom of depression
EDIT: vaan ei kyllä tunnu olevan
http://en.wikipedia.org/wiki/Non-24-hour_sleep-wake_syndrome väillä ainakaa kaukana.
PS: Kyllä opettelen, luen, opiskelen jostain syystä yleensä huomattavasti enemmän öisin, en tiedä miksi.... 3Dtäkin kun opettelin tekemään tein sitä aina yöllä jonkun 7 tunnin ajan.