Internal Time: The Science of Chronotypes, Social Jet Lag, and Why You’re So Tired | Brain Pickings

May 12, 2012

http://www.brainpickings.org/index.php/2012/05/11/internal-time-till-roenneber/
430a midsleep mode

This entry was posted on May 12, 2012 at 5:18 pm and is filed under PopSci.

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