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by catalinist 5895 days ago
no, you're wrong. the spiral-like patterns are the sleep cycles that gets disrupted by staying up late and waking up late in the day. The holiday are the periods that's all gray -> days with no connect in august
2 comments

He kinda did say that. And yes, those all gray areas are vacations.
The spirals are called "Synchronous DSPS", as I recently found out. I've been sleeping like that for about 10 years.

There's some similar charts here: http://www.supermemo.com/articles/sleepchart.htm