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RobFack comments on Solving sleep: just a toe-dipping - Less Wrong Discussion

37 Post author: Capla 30 June 2015 07:38PM

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Comment author: RobFack 30 June 2015 08:30:02PM 0 points [-]

For unknown reasons, there is a dip in the circadian alerting about 8 hours after the beginning of the cycle. This is why people sometimes experience that “2:30 feeling.”

Hunh. That makes sense. I didn't realize that I was why I feel tired in the afternoon. I thought it was because of eating lunch just before.

Comment author: Creutzer 01 July 2015 07:20:17AM 1 point [-]

Lunch could still be an important factor, postprandial somnolence is a well-known phenomenon. There might be a phenomenological difference between that and sleepiness, though. We often do not properly distinguish between sleepiness and fatigue.

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