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The notorious tendency of teenagers to hit the snooze button while sleeping away most of the morning is no cause for alarm.

Listen to the story about teenage sleeping habits.
Read the sentences below. Decide if they are true or false.

1. Teenagers sleep long hours.
2. Sleep research was done at the University of Munich.
3. There is a change to the body's internal biological clock at around the age of 20.
4. People require more sleep as they get older.
5. Scientists studied 2,500 people.
6. Men continue to sleep longer hours until the age of 21.
7. The change in sleeping habits after age 20 may signal the end of adolescence.


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