The brain releases melatonin, a hormone which regulates sleep and wakefulness, on a delayed schedule, making it difficult for teens to even feel tired before 11 PM (Malatesta). With the recommendation of eight and a half to ten hours of sleep for teenagers by the National Sleep Foundation, students would have to be sleeping until 7:30 AM to receive the minimum amount of hours. However, a survey taken by the National Sleep Foundation found that students were significantly missing this mark.
87% of high school students in the united States were getting less than the recommended 8.5 to 9.5 hours of sleep on school nights; indeed, the average amount of school night sleep obtained by high school seniors was less than 7 hours. (Malatesta) This fatigue can be dangerous, especially behind the wheel of a car. A 2014 study performed by University of Minnesota student found that starting school an hour and a half later greatly reduced teen involved car crashes (Malatesta). Students who participate in extracurricular activities or hold a job may be up late some nights out of the week doing homework or arriving home late if they have to travel to a game. This can throw off their internal alarm clocks which can cause them to be tired when they are supposed to be