science
posted by hannah .
how long does a teenager need to sleep at night??
my teacher asked this question and if you get it right, you get 2 extra points on a test, so please help me!!

http://www.sleepfoundation.org/article/sleeptopics/teensandsleep

About 8 hours, unless your homework isn't done or you haven't studied for the next day's test.
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