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Connect_Office8072 t1_isy87ri wrote

I was reading (somewhere - I don’t remember where), that most people do better on a slightly longer than 24-hour day. They conducted a study of people while keeping them in dark caves. I know when I have no scheduled obligations, I end up flipping my hours around and sleeping a lot less.

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Kantrh t1_isye6x1 wrote

In complete darkness people stayed up for thirty six hours and then slept twelve to fourteen hours.

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redmonkees t1_isyjp6z wrote

The people suggesting that we have a 48 hour sleep cycle aren’t completely right. The 48 hour cycle works because they were still exposed to artificial light when they wanted to be active. 48 being a multiple of 24, there was still overlap with biological functions and it’s an easy rhythm to entrain. Without light altogether diurnal organisms naturally fall into closer to a 25 hour cycle.

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