Free-running sleep
Free-running sleep
Free-running sleep (pronunciation: free-run-ning sleep) is a sleep pattern that is not adjusted (entrained) to the 24-hour cycle in any way. It occurs when individuals go to bed later each night and wake up later each day. This pattern is also known as non-24-hour sleep-wake disorder or non-24 in short.
Etymology
The term "free-running" is derived from the concept of a sleep pattern that is free from the constraints of societal norms and schedules. The term "non-24" refers to the fact that the individual's sleep-wake cycle does not align with the typical 24-hour day.
Related Terms
- Circadian rhythm: The natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours.
- Sleep disorder: A condition that frequently impacts your ability to get enough quality sleep.
- Melatonin: A hormone that your brain produces in response to darkness. It helps with the timing of your circadian rhythms and with sleep.
- Chronotype: A person's natural inclination about the times of day when they prefer to sleep or when they are most alert or energetic.
See Also
External links
- Medical encyclopedia article on Free-running sleep
- Wikipedia's article - Free-running sleep
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