In 2017, the Seattle School District decided to delay the start time for secondary schools from 7:50 a.m. to 8:45 a.m. This change allowed a team of researchers from the University of Washington and the Salk Institute for Biological Studies to conduct a pre-/post-study in which they measured sleep-wake cycles. Published in the journal Science Advances, the results show that there was a median increase of 34 minutes of sleep each night, associated...
