Is there any science behind sleeping at night instead of day? Ofcourse There is The Science Behind Everything
Its due to the biological clock!!!
This resides in our Brain which dictates when to sleep and when to wake up.
Many human functions present a cyclic behavior resulting from the existence of certain inner oscillators that coordinate different function.
These inner cycle regulators are called biological clocks. One of the most obvious ones is in charge of the sleep-wake cycle.
This clock resides in the Suprachiasmatic Nucleus (SCN) of the brain and its period is between 24 and 25 hours. Thus, without any other additional factors, humans would go to sleep progressively about an hour later each day and wake up an hour later.
However, humans live their lives in a 24 hours or day-night recurring pattern called a circadian rhythm. The light arriving to the eyes signals the SCN to reset the sleep-wake cycle to a 24 hours one.
This influence is mediated by the small pineal gland, which produces a hormone called Melatonin.
This hormone is produced in the dark and its secretion is inhibited by light. Melatonin is connected with the sleep-wake cycle. Exogenous Melatonin may be used as an aid to reset the inner clock when needed, for instance when traveling fast over time zones people suffer from jet lag and have to sync their inner clock to their target time.
How Night shift workers manage sleep
The 24 hour a day society requires many to work shifting rounds or night shifts to keep the pace.
This kind of work requirements imposes a great load on every person who needs to work shifts. A great deal of research and trials on how to minimize damage and improve performance did not reach a good solution that can be universally implemented. However, if work shift is needed, then it should allow for regular sleep hours. People should keep regular night shifts or day shifts, if possible.
Sleep-wake schedule should be as regular as possible in order to let workers adapt their sleep-wake pattern to the job requirements. For instance, when working on night shifts, people have to keep performance and attention at a high level, whereas their inner clock is set for sleep. It is recommended to keep the same sleep time during days off. In this way the work and physiology may be kept aligned. It is recommended to have bright light at work during the night, and keep low light and wear dark sunglasses during the day, so as to sync the inner clock with the needs.
Also, the home sleep environment has to be very quiet during the day.
People who work shifts for long periods of time may be at risk of developing insomnia either while shift working, or later when they return to a usual daily work frame.
Early wake up
When people wake up early it is either because their sleep needs have been fulfilled or because their actual sleep needs are reduced. When somebody wakes up early while really needing more time asleep and can’t get back to sleep, there is a problem. Sometimes a mood problem can explain the difficulty. This problem needs attention, evaluation and appropriate management.
Is biological clock differ for men and women?
While eight hours per night on average is ideal for both genders, it turns out that men are harder hit by periods of deprivation.5 Lack of sleep causes work performance to suffer more for men than for women, and men recover less quickly from lack of sleep than women do.
On the other hand, women’s shorter cycles mean they are more likely to have a dip in energy at night, which could help explain why there’s an increased risk of work-related injuries in female shift workers.
Ofcourse, it is possible to learn how to re-train your inner biological clock to help you feel more awake or sleepy at different parts of the day depending on your lifestyle needs. But left to its own devices, the body’s natural rhythms make it more likely that if you are a man, you will be a night owl, and for women, an early bird.
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