Is this the key to the teenage brain? We are used to hearing derisive taunts about teenagers being tired and lethargic. But new science shows that school may be to blame.
Sleep more and start school later say experts
Glossary
Apprehension - Anxiety that something bad will happen.
coma - A state of unconsciousness in which a person is unable to respond and cannot be woken up.
Fatigue - Tiredness.
Insomnia - A common sleep disorder which makes it harder to fall asleep, stay asleep or get good quality sleep.
Hormone - Chemicals carried in the bloodstream that alter the way your body's systems act.