The human circadian periodModern research under very controlled conditions has shown the human period for adults to be just slightly longer than 24 hours on average.
Czeisler et al at Harvard found the range for normal, healthy adults of all ages to be quite narrow: 24 hours and 11 minutes ± 16 minutes.
The 'clock' resets itself daily to the 24-hour cycle of the earth's rotation.
(Czeisler et al at Harvard found the range for normal, healthy adults of all ages to be quite narrow: 24 hours and 11 minutes ± 16 minutes.
The 'clock' resets itself daily to the 24-hour cycle of the earth's rotation.
gronkpan @vomitinglarry.bsky.social,
Mon 19 Jan 2009, 10:30,
archived)