<p>"If your teens lack of sleep is keeping you up nights, a new study should help put your mind at ease.</p>
<p>National guidelines recommend at least eight hours of serious snooze time a night for young people. But thats an unrealistic goal for adolescents, who are overloaded with homework, extracurricular activities and part-time jobs, experts say. Or who feel the need to stay up late texting friends or updating Facebook.</p>
<p>In fact, if standardized test performance is any indication, 16-year-olds score best with about seven hours of sleep a night, surprising new research finds. ..."</p>
<p>My guess is that high schoolers are averaging around five hours on school nights. To paraphrase the poet: "Texts to go before I sleep."</p>
<p>TODAY</a> Health - How much sleep do teens really need? Maybe less than you think</p>