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Sleeplessness and Circadian Rhythm Disorder Topic Guide
Sleeplessness and Circadian Rhythm Disorder: A person's circadian rhythm is an internal biological clock that regulates a variety of biological processes according to an approximate 24-hour period.
Insomnia Insomnia affects most people at some point in their lifetime. Insomnia is actually a symptom of a condition, disease, or situation. Non-medical treatment of insomnia includes: