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A comment on Poor Grades Tied to Class Times That Don’t Match Our Biological Clocks. Parent comment

Re:Poor Grades Tied to Class Times That Don’t Match Our Biol... by irrational on Friday March 30, 2018 @11:37PM (#16721567)
What is really interesting is that human's natural sleep cycle is not to sleep continuously for 8 hours. Our natural sleep cycle is to go to bed when it gets dark and then to wake up for a few hours in the middle of the night and get up and do things (apparently this is also the time when most sex happened since other family members in the same room were still asleep) and then go back to sleep and get back up at dawn.
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Re:Poor Grades Tied to Class Times That Don’t Match Our Biol... by b3n on Saturday March 31, 2018 @03:35AM (#16722234)
Does this mean the natural sleep cycle time is a lot less in summer than it is in winter?

Why would other family members had been asleep? Wouldn't this natural sleep cycle have applied to everyone?

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Re:Poor Grades Tied to Class Times That Don’t Match Our Biol... by exDM69 on Saturday March 31, 2018 @07:11AM (#16722800)
I live at 60 degrees Northern latitude, and I sleep a lot more in the winter. And it's really difficult in the summer too, because it never gets dark and you need to go to bed to get up in the morning.

For some reason it's not difficult for me to sleep past sunrise, but very hard to go to bed before sunset or wake before sunrise. And some people are the opposite.

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Re:Poor Grades Tied to Class Times That Don’t Match Our Biol... by irrational on Saturday March 31, 2018 @05:02PM (#16725158)
This just applies to adults. Children and teenagers naturally sleep longer than adults and probably slept throughout the night. Plus, apparently people didn't all get up at the same time during the night. Some would be up from midnight-2am, others from 2am-4am, etc.
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Re:Poor Grades Tied to Class Times That Don’t Match Our Biol... by latexr on Saturday March 31, 2018 @12:43PM (#16723989)
For those landing on this comment, some reference: http://slumberwise.com/science/your-ancestors-didnt-sleep-li...
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