Did you know there are two systems in our bodies that interact to influence when we sleep and when we are awake? One is sleep-wake homeostasis and the other is circadian rhythm. A sleep-wake disorder happens when your body’s internal clock doesn’t match with your environment.
Delayed sleep-wake phase disorder (DSWPD) may be caused by a normal shift that occurs in one's internal clock during puberty.
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Advanced sleep-wake phase disorder (ASP) is one of several circadian rhythm sleep-wake disorders. These disorders occur in people who sleep at times that seem to be out of order with “normal” sleep times.
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Social jet lag, a term coined by German researcher Till Roennenberg in 2006, is the discrepancy in a person’s sleep pattern between the weekday and the weekend, which can cause a person to feel “jet lagged” or tired and fatigued.
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