Teenagers and Sleep

It's just laziness that teenagers can't get out of bed in time for school.

The hormonal changes of puberty is the reason of such behaviour.

The hormone "melatonin" helps us not to fall asleep.

Playing conputer games at night makes it easier for teenagers to fall asleep.

Few teenagers do not get enough sleep.

It is noticed that students do much better at school when they have some extra time in bed.

The reserch show that teenagers have energy at night and can't find energy to get out of bed because ...

Sleep is very important for teenagers because ...

Teenagers can't fall asleep early because ...

Playing computer games and watching TV at night ...

Most teenagers are in bad moods and sometimes depression because ...

The Americans noticed that teenagers do much better in class when ...