1. Which of the following BEST describes the biological sleep cycle of an average youth? A. Eighty-seven percent of high school students in the U. S. are getting less than the
recommended 8.5 to 9.5 hours of sleep, and high school seniors get less than 7 hours
of sleep a night, on average, the AAP says.
B. The AAP reports that the average teenager in the U. S. regularly experiences levels of
sleepiness similar to people with sleep disorders such as narcolepsy.
C. "This research indicates that the average teenager in today's society has difficulty
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falling asleep before 11 p. m. and is best suited to wake up at 8 a. m. or later, the AAP
statement says.
D. "When high school classes begin early in the morning, we ask teens to shine when
their biological clock tells them to sleep." Timothy Morgenthaler said.