The Journal of Developmental and Behavioral Pediatrics tested the benefits of more sleep for teens at a boarding high school, where it was easy to adjust the start time for the school day. Here's what they found: A small 25-minute delay in start time, from 8 a.m. to 8:25 a.m., brought a huge gain to the kids.
The students got a better sleep the night before, were less tired during the day, had better moods, and relied on caffeine less. All of these factors combined, set kids up for better productivity and more learning throughout the day. And the research shows that the improvement in all of those areas leads to healthier kids.
It's hard to believe just a mere 25 minute delay could benefit kids so much but some researchers think it all has to do with those circadian rhythms of sleep.