Scientifically it has been proven that teenagers are not morning people but perhaps night owls. They have a biological tendency to stay up at night and sleep later in the morning. Also, procrastination is a big factor, if a teenager had the choice between school work or to do another activity they enjoy more, they are more than likely to choose the ladder. Teenagers should be getting eight to nine hours of sleep every night, but with their tendency to stay up late or even procrastinate those hours are slowly slipping out of the grasps of these teens. It has been reported that it is not unusual to find that teens have fallen asleep in classes or have loaded up on caffeinated beverages to stay awake. “The AAP is making a definitive and powerful statement about the importance of sleep to the health, safety, performance, and well-being of our nation’s youth,by advocating for later school start times for middle and high school students, the AAP is both promoting the compelling scientific evidence that supports school start time delay as an important public health measure, and providing support and encouragement to those school districts around the country contemplating that change.” The only problem with changing the time school starts is, that it is much easier said than done. School starting later means a lot more than just proividing teenages with the full eight to nine hours of sleep they need. It is also changing a teenagers schedule during a day, which is very difficult. Students who are usually under the age of sixteen usually depend on the transportation of their parents to get to school, unless of course they ride the bus. By changing the time school starts that would mean parents would have to show up late to work or students would have to show up hours before school even starts, so their parents are not late for work defeating the whole purpose of getting more sleep at night.