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from the 24h37m22s-should-be-close-enough-for-anyone dept.
A team of scientists from Holland, Germany and the UK's University of Manchester studied animals in which variation in a single gene dramatically speeds up the natural circadian cycle from 24 to 20 hours (DOI: 10.1073/pnas.1516442113).
It is the first study to demonstrate of the value of having an internal body clock which beats in tune with the speed of the earth's rotation.
The researchers released animals with 24 hour or 20 hour clocks into outdoor pens, with free access to food, and studied how the proportion of animals with fast clocks changed in the population over a period of 14 months.
This allowed the team to study the impact of clock-speed in context of the "real-world" rather than indoors.
Mice with fast-running clock gradually become less common with successive generations, so that by the end of the study, the population was dominated by animals with "normal" 24h clocks.
The research has potentially important implications for human health: clock-disruption associated with abnormal work and lighting conditions, such as night shift work leads to health problems, such as increased risk of Type 2 diabetes.
Wouldn't Mars-born humans gradually select for circadian rhythms that match Mars's rotation?
(Score: 2) by Marand on Wednesday January 27 2016, @01:59AM
I can sympathise, I have the same sort of problem with my sleep cycle and get the same "oh you're just lazy" type shit for it.
I've always compensated for it by doing things I probably shouldn't, like staying up 20-30 hours as needed to correct my schedule again after it gets too far away from an "acceptable" rhythm. Or, at one point I was only sleeping 3-4 hours a night for months because I had to work mornings but couldn't fall asleep early enough, no matter how exhausted I was, because I'd always get a second wind around 11pm or midnight. The only thing that's ever helped me is exercising myself into exhaustion, but that only does so much, so I still tend to wake up during my "high" times. It's also not as convenient to do where I live now, because I used to live within a few blocks of a gym that stayed open fairly late, so I'm dealing with the same shit again.
As for being out late and treated like shit for it, it sucks but it also depends on where you live. For example, nobody gives it a second thought if you're still out that late in Manhattan, at least if you know where to go; businesses around Times Square (especially restaurants) don't even close until around 3am. Then you go to some podunk town in western NY and get harassed by cops fishing for something to bust you over because you made the mistake of being out at 9pm.
(Score: -1, Offtopic) by Anonymous Coward on Thursday January 28 2016, @02:52AM
> Then you go to some podunk town in western NY and get harassed by cops fishing for something to bust you over because you made the mistake of being out at 9pm.
Do you kill them?
>In the United States, as late as the 1880s most States set the minimum age at 10-12, (in Delaware it was 7 in 1895).[8] Inspired by the "Maiden Tribute" female reformers in the US initiated their own campaign[9] which petitioned legislators to raise the legal minimum age to at least 16, with the ultimate goal to raise the age to 18. The campaign was successful, with almost all states raising the minimum age to 16-18 years by 1920.
Also: see: Deuteronomy chapter 22 verses 28-29, hebrew allows men to rape girl children and keep them: thus man + girl is obviously fine. Feminists are commanded to be killed as anyone enticing others to follow another ruler/judge/god is to be killed as-per Deuteronomy. It is wonderful when this happens from time to time: celebrate)