My 12 year old sister is constantly falling asleep, if they visit anyone she will fall asleep at their house, if she's at home she will fall asleep on the couch, when she gets in from school she sometimes falls asleep in her bedroom...if she pretends to be ill to have the day off school (Its obvious she's pretending, just my mum is soft on her!) she will fall asleep after breakfast whilst lying on the couch pretending to be ill, surely this isnt normal?