Why do we Sleep during Night and work during Day?
By anbfriend63
@anbfriend63 (307)
India
June 8, 2010 2:02pm CST
Why each and every people work during the day time. why so? I think the only reason for this is Sunlight. But Nowadays electricity is available 24 hours. Than why do people instead of workinf in the hot sun work in cool moon?
4 responses
@valkerion (1827)
• United Kingdom
8 Jun 10
I don't think there is a comparison between sunlight and electric light!
Sunlight even gives us vitamins. Does electricity do so? :)
1 person likes this
@catalyser (531)
• Malaysia
8 Jun 10
It has something to do with our origins perhaps. From the top of my head, the reason to this phenomenon as you would describe it is because we humans by nature are not nocturnal creatures. We are ill equipped when it comes to night time. We do not have eyes that could see in minimal light like cats and other nocturnal creatures do, our hearing capabilities are not as great either in comparison with any other nocturnal creatures.
So this is why we work in daylight. There is also another reason to this though. I thought about it while I was writing this answer. Have you noticed that in the dark, we sleep longer? Our biological clock get messed up in the absence of light. This is because in the dark, we tend to be sleepy, why? Because a hormone called melatonin controls our sleep-wake cycle, otherwise known as our circadian rhythm. Now this hormone, like you would have guess by now, is light dependent. It is inhibited in light and permitted on the onset of darkness. This only strengthen the notion that we humans are not nocturnal creatures.
Hope that answers your question. I am not a doctor btw, I just have this uncanny curiosity when it comes to the human body, evolution and science in general. 
@StephanieAnnC (4274)
• United States
8 Jun 10
I agree that it does depend on your origins, especially how you grew up. I mean, I was taught to do things during the daytime mostly because the sun was up. If the sun was done, it was rest time. There are jobs out there where you work night shifts, such as doctors and night guards, so they sleep during the days and work during the nights. So, it really does also differ depending on your work as well.
@sindhusha (180)
• India
9 Jun 10
It's the thing that din't start now.It started from our ancestors.During their time there was no electricity.So they thought it is easy to work in bright day light rather to work in dark night.Though electricity was inveted in future they are used to it and hence the same continued with us....
