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A comment on Sleep regularity is a stronger predictor of mortality risk than sleep duration. Parent comment

Re:Sleep regularity is a stronger predictor of mortality ris... by picofarad on Wednesday July 15, 2026 @11:30AM (#48922373)
I think I'm gonna try and find a study that had the 50 hour sleep cycles
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Re:Sleep regularity is a stronger predictor of mortality ris... by toss1 on Wednesday July 15, 2026 @05:00PM (#48926942)
It was a person free-running in a cave. Here's one article about it [0] to get you started, and here's another [1] of multiple 9-day studies showing the fairly immediate shift to 24.5 - 25 hour cycles (we're actually Martians?).

[0] https://howandwhys.com/michel-siffre-time-experiment-body-sl...

[1] https://www.researchgate.net/publication/339110740_Living_Wi...

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