tendency of teenagers to hit the snooze button while sleeping away most
of the morning is no cause for alarm.
the story about teenage sleeping habits.
Read the sentences below. Decide if they are true or false.
sleep long hours.
was done at the University of Munich.
|| There is a
change to the body's internal biological clock at around the age of
|| People require
more sleep as they get older.
continue to sleep longer hours until the age of 21.
change in sleeping habits after age 20 may signal the end of adolescence.