Health24.com | Later school start time pays off with more attentive students

'Biological changes in the circadian rhythm, or internal clock, during puberty prevent teens from falling asleep early enough to get sufficient sleep when faced with early school start times.'

from Health24 News https://www.health24.com/Medical/Sleep/News/later-school-start-time-pays-off-with-more-attentive-students-20190613