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zyfo on Sept 17, 2011 | parent | context | favorite | on: Primary pupils 'need nine hours of sleep'

Cool! Have you tried free running sleep to measure your natural circadian rhythm? [1,2]

1: http://en.wikipedia.org/wiki/Free-running_sleep

2: http://www.supermemo.com/articles/sleep.htm#Free running sleep

ColinWright on Sept 17, 2011 [–]

Haven't got the chance - would love to do so. No blocks of two weeks without fixed time commitments.

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