What are some thing to help teens get the sleep they need? Dr. Mary Carskadon, a professor of psychiatry at Brown University says that setting a routine around bedtime. Scheduling study secession and media times are also helpful for adolescents to get a restful night’s sleep. The University of Oregon recommends that limiting caffeinated products about six to eight hours before sleeping. This is because can stay in the body from three to five hours and can hinder the quality of sleep. They also say that is important to make bed a place for sleep. Homework and screen time should not be done in bed so that the association between a teen’s bed and sleep will be strengthened.