The teenagers struggle to get enough sleep “despite the change in their internal body clocks, school start times and other schedules don’t change.” (Paragraph 11)
What is the main reason teenagers don't get enough sleep?
Hormonal time change, puberty hormones shift the teenager's body clock ahead by about one or two hours, causing them more tired one to two hours afterwards.
Yet, while the teenager falls asleep later, early school begins don't let them sleep in.
Thus, “despite the change in their internal body clocks, school start times and other schedules don’t change.” (Paragraph 11).
To learn more about Sleep-deprived click here:
https://brainly.com/question/14400064