Ok so here my prob,
1) I have German 3 (3 years of it)
2) Ap Bio (1/4 Ap Classes taken this Year)
3) World Humanities : AFAM studies
4) Social life
5) Hockey team. Our team is in 1st, off to state champ in a week

I have all my time filled up, and yet i also only get like 3-6 hrs a sleep a night. I cant stay awake in any of my classes. It seems the more i try and stay away, the faster i fall asleep. Does any one know how i can stay awake in classes? Any hints and such?